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OK",[1574],[1134],{"title":1576},{"r":1577,"n":1578},"aFKkr8-kKaqmnrbL7vanxg,\"start\",\"end\"",{"aFKkr8-kKaqmnrbL7vanxg,\"start\",\"end\"":1579},{"s":1580,"c":1589},{"x":1581,"i":1582,"l":21},"aFKkr8-kKaqmnrbL7vanxg",[1583,1584,1588],{"t":165},{"t":167,"i":1585,"o":170,"l":1587,"c":1572},[1586,155],"OamughC1PBI_",153,{"t":173},[],{"value":1591,"role":175},{"id":107,"version":219,"type":651,"properties":1592,"format":1596,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1597},{"title":1593},[1594],[1595],"Borrowing",{"toggleable":196},{"title":1598},{"r":1599,"n":1600},"VSawj5yloQdyPlmD1FC45w,\"start\",\"end\"",{"VSawj5yloQdyPlmD1FC45w,\"start\",\"end\"":1601},{"s":1602,"c":1610},{"x":1603,"i":1604,"l":21},"VSawj5yloQdyPlmD1FC45w",[1605,1606,1609],{"t":165},{"t":167,"i":1607,"o":170,"l":262,"c":1595},[1608,155],"fWY7w7UNTkut",{"t":173},[],{"value":1612,"role":175},{"id":108,"version":219,"type":674,"properties":1613,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1619},{"title":1614,"language":1617},[1615],[1616],"fn calculate_length(s: &String) -> usize {\n    s.len()  // s is borrowed, not owned\n}\n\nfn main() {\n    let s1 = String::from(\"hello\");\n    let len = calculate_length(&s1);  // Borrow s1\n    println!(\"'{}' has length {}\", s1, len);  // s1 still valid\n}",[1618],[1134],{"title":1620},{"r":1621,"n":1622},"RDPD63wG4WlH-gkt2uf7fg,\"start\",\"end\"",{"RDPD63wG4WlH-gkt2uf7fg,\"start\",\"end\"":1623},{"s":1624,"c":1633},{"x":1625,"i":1626,"l":21},"RDPD63wG4WlH-gkt2uf7fg",[1627,1628,1632],{"t":165},{"t":167,"i":1629,"o":170,"l":1631,"c":1616},[1630,155],"X3SvOZe2CQmu",251,{"t":173},[],{"value":1635,"role":175},{"id":109,"version":219,"type":651,"properties":1636,"format":1640,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1641},{"title":1637},[1638],[1639],"Mutable 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world!\"\n}",[1662],[1134],{"title":1664},{"r":1665,"n":1666},"ZHNUCyCJbIbAb4-qosa14g,\"start\",\"end\"",{"ZHNUCyCJbIbAb4-qosa14g,\"start\",\"end\"":1667},{"s":1668,"c":1677},{"x":1669,"i":1670,"l":21},"ZHNUCyCJbIbAb4-qosa14g",[1671,1672,1676],{"t":165},{"t":167,"i":1673,"o":170,"l":1675,"c":1660},[1674,155],"FWk6nr_j-YLs",186,{"t":173},[],{"value":1679,"role":175},{"id":111,"version":219,"type":220,"properties":1680,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1688},{"title":1681},[1682,1686],[1683,1684],"Key rule:",[1685],[273],[1687]," You can have either one mutable reference OR multiple immutable references, but not both.",{"title":1689},{"r":1690,"n":1691},"G2cyBm6LWtHIw7U9Qf-w4w,\"start\",\"end\"",{"G2cyBm6LWtHIw7U9Qf-w4w,\"start\",\"end\"":1692},{"s":1693,"c":1714},{"x":1694,"i":1695,"l":21},"G2cyBm6LWtHIw7U9Qf-w4w",[1696,1697,1709,1713],{"t":165},{"t":167,"i":1698,"o":170,"l":262,"c":1683,"b":1700},[1699,155],"VvP1Vy4j4MA8",[1701],{"t":289,"x":1694,"l":21,"i":1702,"s":1704,"e":1706,"a":1708},[1699,1703],100,{"i":1705,"a":273},[1699,155],{"i":1707,"a":273},[1699,1107],[273],{"t":167,"i":1710,"o":1711,"l":1064,"c":1687,"b":1712},[1699,1107],[1699,262],[],{"t":173},[],{"value":1716,"role":175},{"id":112,"version":219,"type":244,"properties":1717,"format":1721,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1722},{"title":1718},[1719],[1720],"Structs and 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User {\n    username: String,\n    email: String,\n    active: bool,\n}\n\nimpl User {\n    fn new(username: String, email: String) -> User {\n        User {\n            username,\n            email,\n            active: true,\n        }\n    }\n    \n    fn deactivate(&mut self) {\n        self.active = false;\n    }\n}\n\nfn main() {\n    let mut user = User::new(\n        String::from(\"alice\"),\n        String::from(\"",[1764,1765],"alice@example.com",[1766],[289,1767],"mailto:alice@example.com",[1769],"\")\n    );\n    \n    user.deactivate();\n}",[1771],[1134],{"title":1773},{"r":1774,"n":1775},"krx3ypd84Dfhrm2bVJ5xlA,\"start\",\"end\"",{"krx3ypd84Dfhrm2bVJ5xlA,\"start\",\"end\"":1776},{"s":1777,"c":1805},{"x":1778,"i":1779,"l":21},"krx3ypd84Dfhrm2bVJ5xlA",[1780,1781,1785,1800,1804],{"t":165},{"t":167,"i":1782,"o":170,"l":1784,"c":1762},[1783,155],"MKTeBW-aSS-f",409,{"t":167,"i":1786,"o":1788,"l":478,"c":1764,"b":1789,"a":1799},[1783,1787],410,[1783,1784],[1790],{"t":289,"x":1778,"l":21,"i":1791,"s":1793,"e":1795,"a":1798},[1783,1792],466,{"i":1794,"a":273},[1783,1787],{"i":1796,"a":289},[1783,1797],426,[289,1767],[],{"t":167,"i":1801,"o":1803,"l":367,"c":1769},[1783,1802],427,[1783,1797],{"t":173},[],{"value":1807,"role":175},{"id":115,"version":219,"type":651,"properties":1808,"format":1812,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1813},{"title":1809},[1810],[1811],"Enums and Pattern Matching",{"toggleable":196},{"title":1814},{"r":1815,"n":1816},"oruRn20wb1lupE24UcJjuw,\"start\",\"end\"",{"oruRn20wb1lupE24UcJjuw,\"start\",\"end\"":1817},{"s":1818,"c":1826},{"x":1819,"i":1820,"l":21},"oruRn20wb1lupE24UcJjuw",[1821,1822,1825],{"t":165},{"t":167,"i":1823,"o":170,"l":767,"c":1811},[1824,155],"dvmfzLAllFlI",{"t":173},[],{"value":1828,"role":175},{"id":116,"version":219,"type":674,"properties":1829,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1835},{"title":1830,"language":1833},[1831],[1832],"enum Message {\n    Quit,\n    Move { x: i32, y: i32 },\n    Write(String),\n}\n\nfn process_message(msg: Message) {\n    match msg {\n        Message::Quit => println!(\"Quit\"),\n        Message::Move { x, y } => println!(\"Move to ({}, {})\", x, y),\n        Message::Write(text) => println!(\"Write: {}\", text),\n    }\n}",[1834],[1134],{"title":1836},{"r":1837,"n":1838},"DBl7bEtJOjc2ejJm1CfQcw,\"start\",\"end\"",{"DBl7bEtJOjc2ejJm1CfQcw,\"start\",\"end\"":1839},{"s":1840,"c":1849},{"x":1841,"i":1842,"l":21},"DBl7bEtJOjc2ejJm1CfQcw",[1843,1844,1848],{"t":165},{"t":167,"i":1845,"o":170,"l":1847,"c":1832},[1846,155],"QIfK7jPpUfO7",308,{"t":173},[],{"value":1851,"role":175},{"id":117,"version":219,"type":651,"properties":1852,"format":1856,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1857},{"title":1853},[1854],[1855],"Option and Result",{"toggleable":196},{"title":1858},{"r":1859,"n":1860},"kdQ4QAv_-iG2i04rdQE7Yg,\"start\",\"end\"",{"kdQ4QAv_-iG2i04rdQE7Yg,\"start\",\"end\"":1861},{"s":1862,"c":1870},{"x":1863,"i":1864,"l":21},"kdQ4QAv_-iG2i04rdQE7Yg",[1865,1866,1869],{"t":165},{"t":167,"i":1867,"o":170,"l":478,"c":1855},[1868,155],"MdPRC_1y6NcZ",{"t":173},[],{"value":1872,"role":175},{"id":118,"version":219,"type":220,"properties":1873,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1888},{"title":1874},[1875,1877,1881,1883,1887],[1876],"Rust has no ",[1878,1879],"null",[1880],[749],[1882],". Instead, use ",[1884,1885],"Option",[1886],[749],[1082],{"title":1889},{"r":1890,"n":1891},"cTvumsZcy9iRYoxNjKewZw,\"start\",\"end\"",{"cTvumsZcy9iRYoxNjKewZw,\"start\",\"end\"":1892},{"s":1893,"c":1934},{"x":1894,"i":1895,"l":21},"cTvumsZcy9iRYoxNjKewZw",[1896,1897,1900,1913,1916,1930,1933],{"t":165},{"t":167,"i":1898,"o":170,"l":646,"c":1876},[1899,155],"0FZFlWPMPSC-",{"t":167,"i":1901,"o":1902,"l":1903,"c":1878,"b":1904,"a":1912},[1899,323],[1899,646],4,[1905],{"t":289,"x":1894,"l":21,"i":1906,"s":1907,"e":1909,"a":1911},[1899,367],{"i":1908,"a":273},[1899,323],{"i":1910,"a":289},[1899,291],[749],[],{"t":167,"i":1914,"o":1915,"l":286,"c":1882},[1899,478],[1899,291],{"t":167,"i":1917,"o":1919,"l":776,"c":1884,"b":1920,"a":1929},[1899,1918],32,[1899,895],[1921],{"t":289,"x":1894,"l":21,"i":1922,"s":1924,"e":1926,"a":1928},[1899,1923],40,{"i":1925,"a":273},[1899,1918],{"i":1927,"a":289},[1899,444],[749],[],{"t":167,"i":1931,"o":1932,"l":155,"c":1082},[1899,702],[1899,444],{"t":173},[],{"value":1936,"role":175},{"id":119,"version":219,"type":674,"properties":1937,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1943},{"title":1938,"language":1941},[1939],[1940],"fn divide(a: i32, b: i32) -> Option\u003Ci32> {\n    if b == 0 {\n        None\n    } else {\n        Some(a / b)\n    }\n}\n\nmatch divide(10, 2) {\n    Some(result) => println!(\"Result: {}\", result),\n    None => println!(\"Cannot divide by zero\"),\n}",[1942],[1134],{"title":1944},{"r":1945,"n":1946},"5XWudYleEeCmqdt2KLTUqg,\"start\",\"end\"",{"5XWudYleEeCmqdt2KLTUqg,\"start\",\"end\"":1947},{"s":1948,"c":1957},{"x":1949,"i":1950,"l":21},"5XWudYleEeCmqdt2KLTUqg",[1951,1952,1956],{"t":165},{"t":167,"i":1953,"o":170,"l":1955,"c":1940},[1954,155],"EPDf2aDVg9Zk",236,{"t":173},[],{"value":1959,"role":175},{"id":120,"version":219,"type":220,"properties":1960,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":1969},{"title":1961},[1962,1964,1968],[1963],"For error handling, use ",[1965,1966],"Result",[1967],[749],[1082],{"title":1970},{"r":1971,"n":1972},"o0i6AE1g7qprbxq-hTng4A,\"start\",\"end\"",{"o0i6AE1g7qprbxq-hTng4A,\"start\",\"end\"":1973},{"s":1974,"c":1998},{"x":1975,"i":1976,"l":21},"o0i6AE1g7qprbxq-hTng4A",[1977,1978,1981,1994,1997],{"t":165},{"t":167,"i":1979,"o":170,"l":669,"c":1963},[1980,155],"Ll-Hk-HYv4gI",{"t":167,"i":1982,"o":1983,"l":776,"c":1965,"b":1984,"a":1993},[1980,171],[1980,669],[1985],{"t":289,"x":1975,"l":21,"i":1986,"s":1987,"e":1989,"a":1992},[1980,1918],{"i":1988,"a":273},[1980,171],{"i":1990,"a":289},[1980,1991],30,[749],[],{"t":167,"i":1995,"o":1996,"l":155,"c":1082},[1980,895],[1980,1991],{"t":173},[],{"value":2000,"role":175},{"id":121,"version":219,"type":674,"properties":2001,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":2007},{"title":2002,"language":2005},[2003],[2004],"use std::fs::File;\nuse std::io::ErrorKind;\n\nfn open_file() -> Result\u003CFile, std::io::Error> {\n    File::open(\"file.txt\")\n}\n\nmatch open_file() {\n    Ok(file) => println!(\"Opened file\"),\n    Err(error) => match error.kind() {\n        ErrorKind::NotFound => println!(\"File not found\"),\n        other => println!(\"Error: {:?}\", other),\n    },\n}",[2006],[1134],{"title":2008},{"r":2009,"n":2010},"M9_Rd52z9N3JptLWd0b3ng,\"start\",\"end\"",{"M9_Rd52z9N3JptLWd0b3ng,\"start\",\"end\"":2011},{"s":2012,"c":2021},{"x":2013,"i":2014,"l":21},"M9_Rd52z9N3JptLWd0b3ng",[2015,2016,2020],{"t":165},{"t":167,"i":2017,"o":170,"l":2019,"c":2004},[2018,155],"GkyuX3sM0-7D",339,{"t":173},[],{"value":2023,"role":175},{"id":122,"version":219,"type":244,"properties":2024,"format":2028,"created_time":225,"last_edited_time":226,"parent_id":17,"parent_table":190,"alive":153,"space_id":154,"crdt_format_version":155,"crdt_data":2029},{"title":2025},[2026],[2027],"Error Handling 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class=\"notion light-mode notion-page notion-block-8987f689146945b9a15642bc8115f96c\">\u003Cdiv class=\"notion-viewport\">\u003C/div>\u003Cdiv class=\"notion-text notion-block-2c07ecfde28f4c91a5b58e9c8c352850\">Rust is a systems programming language that combines low-level control with high-level ergonomics. It guarantees memory safety without a garbage collector, making it ideal for performance-critical applications.\u003C/div>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-46b9510fd38a44349f9d2b9b108de604\" data-id=\"46b9510fd38a44349f9d2b9b108de604\">\u003Cspan>\u003Cdiv id=\"46b9510fd38a44349f9d2b9b108de604\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#46b9510fd38a44349f9d2b9b108de604\" title=\"Why Rust?\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Why Rust?\u003C/span>\u003C/span>\u003C/h3>\u003Cdiv class=\"notion-text notion-block-fb40ee4d58124c26bc49218a33cf5cbf\">\u003Cb>Key advantages:\u003C/b>\u003C/div>\u003Cul class=\"notion-list notion-list-disc notion-block-eb5ee51f8f734007a0be7280e76bfd17\">\u003Cli>\u003Cb>Memory safety\u003C/b> without garbage collection\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-5178a15bf09f455c84ce2e3e29e9635e\">\u003Cli>\u003Cb>Zero-cost abstractions\u003C/b> for performance\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-08972014f1364df797dd5239fae0697a\">\u003Cli>\u003Cb>Fearless concurrency\u003C/b> with compile-time checks\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-a3de075559b54f5d88446431449d1347\">\u003Cli>\u003Cb>Great tooling\u003C/b> with Cargo and rustfmt\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-26d13bee08584356960d3fd7866628f8\">\u003Cli>\u003Cb>Growing ecosystem\u003C/b> for web, embedded, and systems work\u003C/li>\u003C/ul>\u003Cdiv class=\"notion-text notion-block-b3ebf821737e466d9482ca2365e0c1e3\">\u003Cb>Common use cases:\u003C/b>\u003C/div>\u003Cul class=\"notion-list notion-list-disc notion-block-1b4f951943ce4fe3bfd8ef78d9f21ea7\">\u003Cli>Web tooling and build systems (like Rolldown!)\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-2a9daa20fb944e41ae7e5f94bc646688\">\u003Cli>Command-line tools\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-d70a32d770dd4d6c9969b3196eaae388\">\u003Cli>WebAssembly modules\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-15de103769174f56a564f4c02bc78a6b\">\u003Cli>Embedded systems\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-8d4d39d0ab7b4ce7a2d1a4ea2650405d\">\u003Cli>Network services\u003C/li>\u003C/ul>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-c518ac9e48134e848dbb7b7f56194415\" data-id=\"c518ac9e48134e848dbb7b7f56194415\">\u003Cspan>\u003Cdiv id=\"c518ac9e48134e848dbb7b7f56194415\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#c518ac9e48134e848dbb7b7f56194415\" title=\"Installation\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Installation\u003C/span>\u003C/span>\u003C/h3>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-656c19b099c94f1a920ccd1814459d54\" data-id=\"656c19b099c94f1a920ccd1814459d54\">\u003Cspan>\u003Cdiv id=\"656c19b099c94f1a920ccd1814459d54\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#656c19b099c94f1a920ccd1814459d54\" title=\"Install Rust with rustup\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Install Rust with rustup\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-bash\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-bash\">curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh\u003C/code>\u003C/pre>\u003Cdiv class=\"notion-text notion-block-95f0fbb520c34f7a831d3118e75d37fa\">This installs:\u003C/div>\u003Cul class=\"notion-list notion-list-disc notion-block-ab2eb3c1438d403181b48f80cca33bfb\">\u003Cli>\u003Ccode class=\"notion-inline-code\">rustc\u003C/code> (the Rust compiler)\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-e01c184156cf4a03a3a688ba07e54898\">\u003Cli>\u003Ccode class=\"notion-inline-code\">cargo\u003C/code> (package manager and build tool)\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-da19fcf81e80425097b4f0670d3e1f0f\">\u003Cli>\u003Ccode class=\"notion-inline-code\">rustup\u003C/code> (toolchain manager)\u003C/li>\u003C/ul>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-5271f444da544addbd44b522b010046c\" data-id=\"5271f444da544addbd44b522b010046c\">\u003Cspan>\u003Cdiv id=\"5271f444da544addbd44b522b010046c\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#5271f444da544addbd44b522b010046c\" title=\"Verify installation\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Verify installation\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-bash\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-bash\">rustc --version\ncargo --version\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-f1bac9207af1404dbbf179debb597193\" data-id=\"f1bac9207af1404dbbf179debb597193\">\u003Cspan>\u003Cdiv id=\"f1bac9207af1404dbbf179debb597193\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#f1bac9207af1404dbbf179debb597193\" title=\"Update Rust\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Update Rust\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-bash\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-bash\">rustup update\u003C/code>\u003C/pre>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-c1e8e81282a74bf19e71f2141917d391\" data-id=\"c1e8e81282a74bf19e71f2141917d391\">\u003Cspan>\u003Cdiv id=\"c1e8e81282a74bf19e71f2141917d391\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#c1e8e81282a74bf19e71f2141917d391\" title=\"Your First Rust Program\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Your First Rust Program\u003C/span>\u003C/span>\u003C/h3>\u003Cdiv class=\"notion-text notion-block-2efa934c02e944ffaef7c4f255f36985\">Create a new project:\u003C/div>\u003Cpre class=\"notion-code language-bash\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-bash\">cargo new hello_rust\ncd hello_rust\u003C/code>\u003C/pre>\u003Cdiv class=\"notion-text notion-block-cfd9204ed75a491998aba6729d685729\">This creates:\u003C/div>\u003Cpre class=\"notion-code language-typescript\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-typescript\">hello_rust/\n├── Cargo.toml    # Project metadata and dependencies\n└── src/\n    └── main.rs   # Your code\u003C/code>\u003C/pre>\u003Cdiv class=\"notion-text notion-block-ede07b08963546af867fd6bcc190a42d\">\u003Cb>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" class=\"notion-link\" href=\"http://main.rs\">main.rs\u003C/a>\u003C/b>\u003Cb>:\u003C/b>\u003C/div>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">fn main() {\n    println!("Hello, world!");\n}\u003C/code>\u003C/pre>\u003Cdiv class=\"notion-text notion-block-8bdaadbb687549be9dcb16756bdd9988\">\u003Cb>Run it:\u003C/b>\u003C/div>\u003Cpre class=\"notion-code language-bash\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-bash\">cargo run\u003C/code>\u003C/pre>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-1d4011e6b8534f0a8702dd850299cf51\" data-id=\"1d4011e6b8534f0a8702dd850299cf51\">\u003Cspan>\u003Cdiv id=\"1d4011e6b8534f0a8702dd850299cf51\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#1d4011e6b8534f0a8702dd850299cf51\" title=\"Rust Fundamentals\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Rust Fundamentals\u003C/span>\u003C/span>\u003C/h3>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-42a9af9f66a24b12ab1b284c2ef12ac3\" data-id=\"42a9af9f66a24b12ab1b284c2ef12ac3\">\u003Cspan>\u003Cdiv id=\"42a9af9f66a24b12ab1b284c2ef12ac3\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#42a9af9f66a24b12ab1b284c2ef12ac3\" title=\"Variables and Mutability\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Variables and Mutability\u003C/span>\u003C/span>\u003C/h4>\u003Cdiv class=\"notion-text notion-block-6359d2cbb58e449d92caeaca16ede0ab\">Variables are immutable by default:\u003C/div>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">let x = 5;\n// x = 6;  // Error: cannot assign twice to immutable variable\n\nlet mut y = 5;\ny = 6;  // OK: y is mutable\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-cac61a7f0b714269852d12aefccb5188\" data-id=\"cac61a7f0b714269852d12aefccb5188\">\u003Cspan>\u003Cdiv id=\"cac61a7f0b714269852d12aefccb5188\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#cac61a7f0b714269852d12aefccb5188\" title=\"Data Types\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Data Types\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">// Integers\nlet a: i32 = 42;        // 32-bit signed\nlet b: u64 = 100;       // 64-bit unsigned\n\n// Floats\nlet c: f64 = 3.14;\n\n// Boolean\nlet d: bool = true;\n\n// Characters\nlet e: char = '🦀';\n\n// Tuples\nlet tuple: (i32, f64, char) = (500, 6.4, 'x');\n\n// Arrays\nlet array: [i32; 3] = [1, 2, 3];\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-070ae2c1d8db4c7b87bd45e9e1ee4e9e\" data-id=\"070ae2c1d8db4c7b87bd45e9e1ee4e9e\">\u003Cspan>\u003Cdiv id=\"070ae2c1d8db4c7b87bd45e9e1ee4e9e\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#070ae2c1d8db4c7b87bd45e9e1ee4e9e\" title=\"Functions\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Functions\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">fn add(x: i32, y: i32) -> i32 {\n    x + y  // No semicolon = return value\n}\n\nfn main() {\n    let result = add(5, 3);\n    println!("Result: {}", result);\n}\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-8692f0ada44a40db8b3a017b286ef346\" data-id=\"8692f0ada44a40db8b3a017b286ef346\">\u003Cspan>\u003Cdiv id=\"8692f0ada44a40db8b3a017b286ef346\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#8692f0ada44a40db8b3a017b286ef346\" title=\"Control Flow\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Control Flow\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">// if expressions\nlet number = 6;\nif number % 2 == 0 {\n    println!("Even");\n} else {\n    println!("Odd");\n}\n\n// loop\nloop {\n    println!("Forever!");\n    break;  // until we break\n}\n\n// while\nlet mut n = 0;\nwhile n < 5 {\n    n += 1;\n}\n\n// for\nfor i in 0..5 {\n    println!("{}", i);\n}\u003C/code>\u003C/pre>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-27d22f2ff64943dfac8851315bdc8dc0\" data-id=\"27d22f2ff64943dfac8851315bdc8dc0\">\u003Cspan>\u003Cdiv id=\"27d22f2ff64943dfac8851315bdc8dc0\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#27d22f2ff64943dfac8851315bdc8dc0\" title=\"Ownership: Rust's Superpower\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Ownership: Rust's Superpower\u003C/span>\u003C/span>\u003C/h3>\u003Cdiv class=\"notion-text notion-block-33abc30d54a44577ac4628e9a30bb1d4\">Ownership is Rust's most distinctive feature—it ensures memory safety without a garbage collector.\u003C/div>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-33c0ecac0bb94c7e9ecda491235b12f8\" data-id=\"33c0ecac0bb94c7e9ecda491235b12f8\">\u003Cspan>\u003Cdiv id=\"33c0ecac0bb94c7e9ecda491235b12f8\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#33c0ecac0bb94c7e9ecda491235b12f8\" title=\"The Rules\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">The Rules\u003C/span>\u003C/span>\u003C/h4>\u003Col start=\"1\" class=\"notion-list notion-list-numbered notion-block-2f671872690a477faa38298702fcfd57\" style=\"list-style-type:decimal\">\u003Cli>Each value has a single owner\u003C/li>\u003C/ol>\u003Col start=\"2\" class=\"notion-list notion-list-numbered notion-block-f0104127d44449eb8ed52e5e5ed87a42\" style=\"list-style-type:decimal\">\u003Cli>When the owner goes out of scope, the value is dropped\u003C/li>\u003C/ol>\u003Col start=\"3\" class=\"notion-list notion-list-numbered notion-block-ee9f41d9abcf4982aaa98c3f16bcf383\" style=\"list-style-type:decimal\">\u003Cli>Values can be moved or borrowed, but not both\u003C/li>\u003C/ol>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-7c9b6c7d239841449485b4bbf096b5c2\" data-id=\"7c9b6c7d239841449485b4bbf096b5c2\">\u003Cspan>\u003Cdiv id=\"7c9b6c7d239841449485b4bbf096b5c2\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#7c9b6c7d239841449485b4bbf096b5c2\" title=\"Moving Values\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Moving Values\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">let s1 = String::from("hello");\nlet s2 = s1;  // s1 is moved to s2\n\n// println!("{}", s1);  // Error: s1 is no longer valid\nprintln!("{}", s2);     // OK\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-4459f6b96240415b912e374c7f9e2d19\" data-id=\"4459f6b96240415b912e374c7f9e2d19\">\u003Cspan>\u003Cdiv id=\"4459f6b96240415b912e374c7f9e2d19\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#4459f6b96240415b912e374c7f9e2d19\" title=\"Borrowing\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Borrowing\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">fn calculate_length(s: &String) -> usize {\n    s.len()  // s is borrowed, not owned\n}\n\nfn main() {\n    let s1 = String::from("hello");\n    let len = calculate_length(&s1);  // Borrow s1\n    println!("'{}' has length {}", s1, len);  // s1 still valid\n}\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-d2d7acbf7abd49f29312ef498c3ce038\" data-id=\"d2d7acbf7abd49f29312ef498c3ce038\">\u003Cspan>\u003Cdiv id=\"d2d7acbf7abd49f29312ef498c3ce038\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#d2d7acbf7abd49f29312ef498c3ce038\" title=\"Mutable Borrowing\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Mutable Borrowing\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">fn append_world(s: &mut String) {\n    s.push_str(", world!");\n}\n\nfn main() {\n    let mut s = String::from("hello");\n    append_world(&mut s);\n    println!("{}", s);  // "hello, world!"\n}\u003C/code>\u003C/pre>\u003Cdiv class=\"notion-text notion-block-83e21f2704084a92a4b68bc2f01f21ca\">\u003Cb>Key rule:\u003C/b> You can have either one mutable reference OR multiple immutable references, but not both.\u003C/div>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-45c6a864d59f48a59ebddf1d0e580120\" data-id=\"45c6a864d59f48a59ebddf1d0e580120\">\u003Cspan>\u003Cdiv id=\"45c6a864d59f48a59ebddf1d0e580120\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#45c6a864d59f48a59ebddf1d0e580120\" title=\"Structs and Enums\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Structs and Enums\u003C/span>\u003C/span>\u003C/h3>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-3869eca6ae92440c8ee557f3282ca6f0\" data-id=\"3869eca6ae92440c8ee557f3282ca6f0\">\u003Cspan>\u003Cdiv id=\"3869eca6ae92440c8ee557f3282ca6f0\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#3869eca6ae92440c8ee557f3282ca6f0\" title=\"Structs\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Structs\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">struct User {\n    username: String,\n    email: String,\n    active: bool,\n}\n\nimpl User {\n    fn new(username: String, email: String) -> User {\n        User {\n            username,\n            email,\n            active: true,\n        }\n    }\n    \n    fn deactivate(&mut self) {\n        self.active = false;\n    }\n}\n\nfn main() {\n    let mut user = User::new(\n        String::from("alice"),\n        String::from("alice@example.com")\n    );\n    \n    user.deactivate();\n}\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-10670b9f8d6a4643ab08850476e01541\" data-id=\"10670b9f8d6a4643ab08850476e01541\">\u003Cspan>\u003Cdiv id=\"10670b9f8d6a4643ab08850476e01541\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#10670b9f8d6a4643ab08850476e01541\" title=\"Enums and Pattern Matching\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Enums and Pattern Matching\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">enum Message {\n    Quit,\n    Move { x: i32, y: i32 },\n    Write(String),\n}\n\nfn process_message(msg: Message) {\n    match msg {\n        Message::Quit => println!("Quit"),\n        Message::Move { x, y } => println!("Move to ({}, {})", x, y),\n        Message::Write(text) => println!("Write: {}", text),\n    }\n}\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-c0e3560a1b444f37a9aecce118e98db4\" data-id=\"c0e3560a1b444f37a9aecce118e98db4\">\u003Cspan>\u003Cdiv id=\"c0e3560a1b444f37a9aecce118e98db4\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#c0e3560a1b444f37a9aecce118e98db4\" title=\"Option and Result\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Option and Result\u003C/span>\u003C/span>\u003C/h4>\u003Cdiv class=\"notion-text notion-block-23cee292dd5940f39a22ce37509ec881\">Rust has no \u003Ccode class=\"notion-inline-code\">null\u003C/code>. Instead, use \u003Ccode class=\"notion-inline-code\">Option\u003C/code>:\u003C/div>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">fn divide(a: i32, b: i32) -> Option<i32> {\n    if b == 0 {\n        None\n    } else {\n        Some(a / b)\n    }\n}\n\nmatch divide(10, 2) {\n    Some(result) => println!("Result: {}", result),\n    None => println!("Cannot divide by zero"),\n}\u003C/code>\u003C/pre>\u003Cdiv class=\"notion-text notion-block-8eedca82e94342bdbd72974dbc0a13ac\">For error handling, use \u003Ccode class=\"notion-inline-code\">Result\u003C/code>:\u003C/div>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">use std::fs::File;\nuse std::io::ErrorKind;\n\nfn open_file() -> Result<File, std::io::Error> {\n    File::open("file.txt")\n}\n\nmatch open_file() {\n    Ok(file) => println!("Opened file"),\n    Err(error) => match error.kind() {\n        ErrorKind::NotFound => println!("File not found"),\n        other => println!("Error: {:?}", other),\n    },\n}\u003C/code>\u003C/pre>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-d55a6925b2c34b1dbe0542792d29ea8a\" data-id=\"d55a6925b2c34b1dbe0542792d29ea8a\">\u003Cspan>\u003Cdiv id=\"d55a6925b2c34b1dbe0542792d29ea8a\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#d55a6925b2c34b1dbe0542792d29ea8a\" title=\"Error Handling Shortcuts\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Error Handling Shortcuts\u003C/span>\u003C/span>\u003C/h3>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">use std::fs::File;\n\n// ? operator propagates errors\nfn read_file() -> Result<String, std::io::Error> {\n    let mut file = File::open("file.txt")?;\n    let mut contents = String::new();\n    file.read_to_string(&mut contents)?;\n    Ok(contents)\n}\u003C/code>\u003C/pre>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-fb6c4b6fbc6b41c8bfc2d26445d75d24\" data-id=\"fb6c4b6fbc6b41c8bfc2d26445d75d24\">\u003Cspan>\u003Cdiv id=\"fb6c4b6fbc6b41c8bfc2d26445d75d24\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#fb6c4b6fbc6b41c8bfc2d26445d75d24\" title=\"Collections\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Collections\u003C/span>\u003C/span>\u003C/h3>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-40e284843216486595593004e57f55d4\" data-id=\"40e284843216486595593004e57f55d4\">\u003Cspan>\u003Cdiv id=\"40e284843216486595593004e57f55d4\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#40e284843216486595593004e57f55d4\" title=\"Vector\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Vector\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">let mut v: Vec<i32> = Vec::new();\nv.push(1);\nv.push(2);\nv.push(3);\n\n// or\nlet v = vec![1, 2, 3];\n\nfor i in &v {\n    println!("{}", i);\n}\u003C/code>\u003C/pre>\u003Ch4 class=\"notion-h notion-h3 notion-h-indent-1 notion-block-0fe89f00ec654011933d95dc0092608d\" data-id=\"0fe89f00ec654011933d95dc0092608d\">\u003Cspan>\u003Cdiv id=\"0fe89f00ec654011933d95dc0092608d\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#0fe89f00ec654011933d95dc0092608d\" title=\"HashMap\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">HashMap\u003C/span>\u003C/span>\u003C/h4>\u003Cpre class=\"notion-code language-rust\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-rust\">use std::collections::HashMap;\n\nlet mut scores = HashMap::new();\nscores.insert(String::from("Blue"), 10);\nscores.insert(String::from("Red"), 50);\n\nmatch scores.get("Blue") {\n    Some(score) => println!("Score: {}", score),\n    None => println!("No score"),\n}\u003C/code>\u003C/pre>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-6e2cfc06053249929426e58d2a13065d\" data-id=\"6e2cfc06053249929426e58d2a13065d\">\u003Cspan>\u003Cdiv id=\"6e2cfc06053249929426e58d2a13065d\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#6e2cfc06053249929426e58d2a13065d\" title=\"Common Cargo Commands\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Common Cargo Commands\u003C/span>\u003C/span>\u003C/h3>\u003Cpre class=\"notion-code language-bash\" tabindex=\"0\">\u003Cdiv class=\"notion-code-copy\">\u003Cdiv class=\"notion-code-copy-button\">\u003Csvg fill=\"currentColor\" viewBox=\"0 0 16 16\" width=\"1em\" version=\"1.1\">\u003Cpath fill-rule=\"evenodd\" d=\"M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z\">\u003C/path>\u003Cpath fill-rule=\"evenodd\" d=\"M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z\">\u003C/path>\u003C/svg>\u003C/div>\u003C/div>\u003Ccode class=\"language-bash\">cargo new my-project      # Create new project\ncargo build               # Build in debug mode\ncargo build --release     # Build optimized\ncargo run                 # Build and run\ncargo test                # Run tests\ncargo check               # Check without building\ncargo clippy              # Run linter\ncargo fmt                 # Format code\u003C/code>\u003C/pre>\u003Ch3 class=\"notion-h notion-h2 notion-h-indent-0 notion-block-32fdba7b8fc5496ca5ae174cc7eec2b1\" data-id=\"32fdba7b8fc5496ca5ae174cc7eec2b1\">\u003Cspan>\u003Cdiv id=\"32fdba7b8fc5496ca5ae174cc7eec2b1\" class=\"notion-header-anchor\">\u003C/div>\u003Ca class=\"notion-hash-link\" href=\"#32fdba7b8fc5496ca5ae174cc7eec2b1\" title=\"Next Steps\">\u003Csvg viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\u003Cpath fill-rule=\"evenodd\" d=\"M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z\">\u003C/path>\u003C/svg>\u003C/a>\u003Cspan class=\"notion-h-title\">Next Steps\u003C/span>\u003C/span>\u003C/h3>\u003Cdiv class=\"notion-text notion-block-0433e685e8504e99b0f3363b5519c741\">\u003Cb>Essential reading:\u003C/b>\u003C/div>\u003Cul class=\"notion-list notion-list-disc notion-block-ab8f5a9c6ba341aa88b432a8e5c2227a\">\u003Cli>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" class=\"notion-link\" href=\"https://doc.rust-lang.org/book/\">The Rust Book\u003C/a> (start here!)\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-e01dcfab4a0f4608b062bb9f884d2894\">\u003Cli>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" class=\"notion-link\" href=\"https://doc.rust-lang.org/rust-by-example/\">Rust by Example\u003C/a>\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-4c6e883c12054c058bf599fb1c28f5ed\">\u003Cli>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" class=\"notion-link\" href=\"https://github.com/rust-lang/rustlings\">Rustlings\u003C/a> (interactive exercises)\u003C/li>\u003C/ul>\u003Cdiv class=\"notion-text notion-block-2ba3f50eda66452ab3d66091ed5c74b2\">\u003Cb>Intermediate topics:\u003C/b>\u003C/div>\u003Cul class=\"notion-list notion-list-disc notion-block-6a1667da54994ee19968cf12ece264a3\">\u003Cli>Lifetimes and advanced borrowing\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-a39fff1b90964fa5a2015acce5f91098\">\u003Cli>Traits and generics\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-87570373a48f40fb9f8dd531ae43e32c\">\u003Cli>Concurrency with threads and async/await\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-f448aa2643f940d0a5708de8e2607449\">\u003Cli>Macros\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-56c574cede044fd88b94b7342f0cef66\">\u003Cli>Unsafe Rust\u003C/li>\u003C/ul>\u003Cdiv class=\"notion-text notion-block-1204945ae62141c3beeb327b75141d36\">\u003Cb>Practice projects:\u003C/b>\u003C/div>\u003Cul class=\"notion-list notion-list-disc notion-block-a107661b72904aa8bd82cc1bd325b7fa\">\u003Cli>Build a CLI tool\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-f2088d97cfed418c928f2c8d68604e40\">\u003Cli>Implement common data structures\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-d352efce170b47d3916bb5c6631daf4f\">\u003Cli>Create a simple web server\u003C/li>\u003C/ul>\u003Cul class=\"notion-list notion-list-disc notion-block-065380b91c4349fd88b74eb1c836eb20\">\u003Cli>Contribute to open source Rust projects\u003C/li>\u003C/ul>\u003Chr class=\"notion-hr notion-block-536b7ba12af64173a253fae042444f3c\"/>\u003Cdiv class=\"notion-text notion-block-4010ae4c41734af6afca630ac3f90cc3\">Rust has a steep learning curve, but the compiler is your teacher. Read error messages carefully—they're remarkably helpful. Welcome to the Rust community! 🦀\u003C/div>\u003C/main>",1771336987011]