\u524d\u3005\u304b\u3089\u6c17\u306b\u306a\u3063\u3066\u3044\u305fRust\u3092\u6298\u89d2\u306e\u4f11\u307f\u3060\u3057\u89e6\u3063\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\uff01
\n\u30bf\u30a4\u30c8\u30eb\u901a\u308a\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304b\u3089\u3044\u3051\u308b\u3068\u3053\u307e\u3067\u3084\u3063\u3066\u307f\u307e\u3057\u305f\uff01
\n\u5b66\u7fd2\u306e\u53c2\u8003\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u306e\u76ee\u51e6\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002
\n\u3061\u306a\u307f\u306b\u7b46\u8005\u306f\u307e\u3068\u3082\u306b\u3053\u308c\u66f8\u3051\u308b\u305c\uff01\u3063\u3066\u30ec\u30d9\u30eb\u306e\u8a00\u8a9e\u306f\u4e00\u500b\u3082\u306a\u3044\u3067\u3059w
\nLambda\u3067\u306a\u3093\u3061\u3083\u3063\u3066\u30af\u30bd\u30b3\u30fc\u30c9\u66f8\u304f\u306e\u304c\u7cbe\u4e00\u676f\u306e\u30ec\u30d9\u30eb\u306a\u306e\u3067\u3002\u3002<\/p>\n
\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8 : https:\/\/doc.rust-jp.rs\/the-rust-programming-language-ja\/1.6\/book\/
\n\u65e5\u672c\u8a9e\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u306e\u3067\u5b09\u3057\u3044\u3067\u3059\u306d\uff01\u3056\u3063\u3068\u77e5\u3063\u3066\u3044\u305f\u77e5\u8b58\u3068\u3057\u3066\u306f\u4ee5\u4e0b\u3067\u3059\u3002<\/p>\n
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\u8272\u3005\u8abf\u3079\u3066\u308f\u304b\u3063\u305f\u3053\u3068<\/p>\n
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C\/C++\u3092\u5f15\u304d\u7d99\u3044\u3067\u3044\u308b\u306e\u3067\u500b\u4eba\u7684\u306b\u306f\u30de\u30af\u30ed\u3092\u3053\u306d\u3053\u306d\u3057\u3066\u3044\u305f\u6642\u4ee3\u3092\u601d\u3044\u51fa\u3057\u3066\u3001\u61d0\u304b\u3057\u3044\u6c17\u6301\u3061\u306b\u306a\u308a\u306a\u304c\u3089\u697d\u3057\u304f\u5b66\u3079\u307e\u3057\u305f\uff01(\u5acc\u3044\u306a\u65b9\u306f\u3059\u3054\u304f\u5acc\u3044\u304b\u3082\u3057\u308c\u306a\u3044\u3067\u3059w)<\/p>\n
fn<\/span> addition<\/span><<\/span>'a<\/span>><\/span>(<\/span>a<\/span>:<\/span>i32<\/span>,<\/span>b<\/span>:<\/span>i32<\/span>)<\/span>-><\/span>&<\/span>'a<\/span> i32<\/span>{<\/span>\r\n let<\/span> c<\/span>=<\/span>a<\/span>+<\/span>b<\/span>;<\/span>\r\n return<\/span> &<\/span>c<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\u3067\u306f\u65e9\u901f\u3084\u3063\u3066\u304d\u307e\u3059\uff01<\/p>\n
\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h1>\n
\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f\u3059\u3054\u304f\u7c21\u5358\u3067\u3059\uff01
\n\u4ee5\u4e0b\u516c\u5f0f\u30da\u30fc\u30b8\u306e\u30c8\u30c3\u30d7\u304b\u3089\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u306b\u30b3\u30d4\u30da\u3067\u7d42\u308f\u308a\u3067\u3059w
\nhttps:\/\/www.rust-lang.org\/tools\/install<\/p>\n
$ <\/span>curl --proto<\/span> '=https'<\/span> --tlsv1<\/span>.2 -sSf<\/span> https:\/\/sh.rustup.rs | sh\r\ninfo: downloading installer\r\n\r\nWelcome to Rust!\r\n\r\nThis will download and install <\/span>the official compiler for <\/span>the Rust\r\nprogramming language, and its package manager, Cargo.\r\n\r\nIt will add the cargo, rustc, rustup and other commands to\r\nCargo's bin directory, located at:\r\n\r\n \/Users\/user\/.cargo\/bin\r\n\r\nThis can be modified with the CARGO_HOME environment variable.\r\n\r\nRustup metadata and toolchains will be installed into the Rustup\r\nhome directory, located at:\r\n\r\n \/Users\/user\/.rustup\r\n\r\nThis can be modified with the RUSTUP_HOME environment variable.\r\n\r\nThis path will then be added to your PATH environment variable by\r\nmodifying the profile files located at:\r\n\r\n \/Users\/user\/.profile\r\n\/Users\/user\/.bash_profile\r\n\r\nYou can uninstall at any time with rustup self uninstall and\r\nthese changes will be reverted.\r\n\r\nCurrent installation options:\r\n\r\n\r\n default host triple: x86_64-apple-darwin\r\n default toolchain: stable\r\n profile: default\r\n modify PATH variable: yes\r\n\r\n1) Proceed with installation (default)\r\n2) Customize installation\r\n3) Cancel installation\r\n>1\r\n\r\ninfo: profile set to '<\/span>default'\r\ninfo: default host triple is x86_64-apple-darwin\r\ninfo: syncing channel updates for '<\/span>stable-x86_64-apple-darwin'\r\ninfo: latest update on 2019-12-19, rust version 1.40.0 (73528e339 2019-12-16)\r\ninfo: downloading component '<\/span>cargo'\r\n 3.7 MiB \/ 3.7 MiB (100 %) 3.7 MiB\/s in 1s ETA: 0s\r\ninfo: downloading component '<\/span>clippy'\r\ninfo: downloading component '<\/span>rust-docs'\r\n 11.9 MiB \/ 11.9 MiB (100 %) 3.5 MiB\/s in 3s ETA: 0s\r\ninfo: downloading component '<\/span>rust-std'\r\n 16.2 MiB \/ 16.2 MiB (100 %) 3.7 MiB\/s in 4s ETA: 0s\r\ninfo: downloading component '<\/span>rustc'\r\n 54.9 MiB \/ 54.9 MiB (100 %) 3.5 MiB\/s in 15s ETA: 0s\r\ninfo: downloading component '<\/span>rustfmt'\r\ninfo: installing component '<\/span>cargo'\r\ninfo: installing component '<\/span>clippy'\r\ninfo: installing component '<\/span>rust-docs'\r\n 11.9 MiB \/ 11.9 MiB (100 %) 2.6 MiB\/s in 4s ETA: 0s\r\ninfo: installing component '<\/span>rust-std'\r\n 16.2 MiB \/ 16.2 MiB (100 %) 11.2 MiB\/s in 1s ETA: 0s\r\ninfo: installing component '<\/span>rustc'\r\n 54.9 MiB \/ 54.9 MiB (100 %) 14.6 MiB\/s in 3s ETA: 0s\r\ninfo: installing component '<\/span>rustfmt'\r\ninfo: default toolchain set to '<\/span>stable'\r\n\r\n stable installed - rustc 1.40.0 (73528e339 2019-12-16)\r\n\r\n\r\nRust is installed now. Great!\r\n\r\nTo get started you need Cargo'<\/span>s bin directory (<\/span>$HOME<\/span>\/.cargo\/bin)<\/span> in <\/span>your PATH\r\nenvironment variable. Next time <\/span>you log in <\/span>this will be done\r\n<\/span>automatically.\r\n\r\nTo configure your current shell run source<\/span> $HOME<\/span>\/.cargo\/env\r\n<\/code><\/pre>\n\u30d1\u30b9\u3082\u8ffd\u52a0\u3057\u3066\u304f\u308c\u3066\u3044\u308b\u307f\u305f\u3044\u306a\u306e\u3067source ~\/.bash_profile\u3067\u3059\u3050\u306b\u30d0\u30fc\u30b8\u30e7\u30f3\u78ba\u8a8d\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
$ <\/span>source<\/span> ~\/.bash_profile\r\n$ <\/span>\r\n$ <\/span>rustc --version<\/span>\r\nrustc 1.40.0 (<\/span>73528e339 2019-12-16)<\/span>\r\n$ <\/span>\r\n$ <\/span>cargo --version<\/span>\r\ncargo 1.40.0 (<\/span>bc8e4c8be 2019-11-22)<\/span>\r\n$ <\/span>\r\n$ <\/span>rustdoc --version<\/span>\r\nrustdoc 1.40.0 (<\/span>73528e339 2019-12-16)<\/span>\r\n<\/code><\/pre>\n\u3067\u306fHelloworld\u307e\u3067\u4e00\u6c17\u306b\u3084\u3063\u3061\u3083\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n
$ <\/span>mkdir <\/span>hello_world;<\/span>cd <\/span>hello_world\r\n$ <\/span>\r\n$ <\/span>touch <\/span>main.rs\r\n$ <\/span>\r\n$ <\/span>ll\r\ntotal 0\r\ndrwxr-xr-x 3 user staff 96 12 30 11:08 .<\/span>\r\ndrwxr-xr-x 4 user staff 128 12 30 11:08 ..\r\n-rw-r--r--<\/span> 1 user staff 0 12 30 11:08 main.rs\r\n$ <\/span>\r\n<\/code><\/pre>\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n println!<\/span>(<\/span>\"Hello, world!\"<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n$ <\/span>rustc main.rs\r\n$ <\/span>\r\n$ <\/span>ls<\/span> -l<\/span>\r\ntotal 552\r\ndrwxr-xr-x 4 user staff 128 12 30 11:09 .<\/span>\r\ndrwxr-xr-x 4 user staff 128 12 30 11:08 ..\r\n-rwxr-xr-x<\/span> 1 user staff 276832 12 30 11:09 main\r\n-rw-r--r--<\/span> 1 user staff 45 12 30 11:09 main.rs\r\n$ <\/span>.\/main\r\nHello, world!\r\n<\/code><\/pre>\n\u7c21\u5358\u3067\u3059\u306d\uff01\u3061\u306a\u307f\u306b\u4e0b\u8a18\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
$ <\/span>mkdir <\/span>cargo_new;<\/span>cd <\/span>cargo_new\r\n$ <\/span>cargo new helloworld\r\n Created binary (<\/span>application)<\/span> `<\/span>helloworld`<\/span> package\r\n$ <\/span>\r\n$ <\/span>ls<\/span> -l<\/span>\r\ntotal 0\r\ndrwxr-xr-x 3 user staff 96 12 30 11:12 .<\/span>\r\ndrwxr-xr-x 6 user staff 192 12 30 11:12 ..\r\ndrwxr-xr-x 4 user staff 128 12 30 11:12 helloworld\r\n$ <\/span>\r\n$ <\/span>cd <\/span>helloworld\r\n$ <\/span>\r\n$ <\/span>ls<\/span> -l<\/span>\r\ntotal 8\r\ndrwxr-xr-x 4 user staff 128 12 30 11:12 .<\/span>\r\ndrwxr-xr-x 3 user staff 96 12 30 11:12 ..\r\n-rw-r--r--<\/span> 1 user staff 233 12 30 11:12 Cargo.toml\r\ndrwxr-xr-x 3 user staff 96 12 30 11:12 src\r\n$ <\/span>\r\n$ <\/span>ll src\r\ntotal 8\r\ndrwxr-xr-x 3 user staff 96 12 30 11:12 .<\/span>\r\ndrwxr-xr-x 6 user staff 192 12 30 11:13 ..\r\n-rw-r--r--<\/span> 1 user staff 45 12 30 11:12 main.rs\r\n<\/code><\/pre>\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n println!<\/span>(<\/span>\"Hello, world!\"<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n$ <\/span>cargo run\r\n Compiling helloworld v0.1.0 (<\/span>\/Users\/user\/cargo_new\/helloworld)<\/span>\r\n Finished dev [<\/span>unoptimized + debuginfo] target(<\/span>s)<\/span> in <\/span>3.21s\r\n Running `<\/span>target\/debug\/helloworld`<\/span>\r\nHello, world! #Hello, world!\u304c\u8868\u793a\u3055\u308c\u308b<\/span>\r\n$ <\/span>\r\n$ <\/span>ls<\/span> -l<\/span>\r\ntotal 16\r\ndrwxr-xr-x 6 user staff 192 12 30 11:13 .<\/span>\r\ndrwxr-xr-x 3 user staff 96 12 30 11:12 ..\r\n-rw-r--r--<\/span> 1 user staff 142 12 30 11:13 Cargo.lock #.lock\u30d5\u30a1\u30a4\u30eb\u304c\u751f\u6210\u3055\u308c\u308b<\/span>\r\n-rw-r--r--<\/span> 1 user staff 233 12 30 11:12 Cargo.toml\r\ndrwxr-xr-x 3 user staff 96 12 30 11:12 src\r\ndrwxr-xr-x 4 user staff 128 12 30 11:13 target\r\n<\/code><\/pre>\n# This file is automatically @generated by Cargo.\r\n# It is not intended for manual editing.\r\n<\/span>[[package<\/span>]]\r\nname<\/span> = \"helloworld\"<\/span>\r\nversion<\/span> = \"0.1.0\"<\/span>\r\n<\/code><\/pre>\nCargo.toml\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/p>\n
$ <\/span>tree -d<\/span>\r\n.<\/span>\r\n\u251c\u2500\u2500 src\r\n\u2514\u2500\u2500 target\r\n \u2514\u2500\u2500 debug\r\n \u251c\u2500\u2500 build\r\n \u251c\u2500\u2500 deps\r\n \u2502\u00a0\u00a0 \u2514\u2500\u2500 helloworld-f52023378caf7043.dSYM\r\n \u2502\u00a0\u00a0 \u2514\u2500\u2500 Contents\r\n \u2502\u00a0\u00a0 \u2514\u2500\u2500 Resources\r\n \u2502\u00a0\u00a0 \u2514\u2500\u2500 DWARF\r\n \u251c\u2500\u2500 examples\r\n \u251c\u2500\u2500 helloworld.dSYM -> deps\/helloworld-f52023378caf7043.dSYM\r\n \u2514\u2500\u2500 incremental\r\n \u2514\u2500\u2500 helloworld-iqi0rwk4kl00\r\n \u2514\u2500\u2500 s-fj8ked5lur-u8cgl5-1x8ryuh7rlm9x\r\n<\/code><\/pre>\nHello world\u304f\u3089\u3044\u306a\u3089\u30d5\u30a1\u30a4\u30eb\u4f5c\u6210\u3057\u3066\u3057\u307e\u3063\u305f\u65b9\u304c\u697d\u3067\u3059\u304c\u3001\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u304c\u751f\u6210\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u4f55\u304b\u5f79\u306b\u7acb\u3064\u306e\u3067\u3057\u3087\u3046\uff01\u697d\u3057\u307f\u306b\u3057\u3066\u9032\u3081\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
main\u95a2\u6570<\/h3>\nmain\u95a2\u6570\u306f\u7279\u5225\u3067\u3001\u5168\u3066\u306eRust\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u958b\u59cb\u70b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p><\/blockquote>\n
\u3068\u8a18\u8f09\u304c\u3042\u308b\u3068\u304a\u308amain\u95a2\u6570\u306f\u3069\u3053\u306b\u3042\u308d\u3046\u3068\u307e\u305a\u306f\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u306b\u7559\u610f\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002
\n\u4e0a\u304b\u3089\u30c9\u30d0\u30fc\u3063\u3068\u5b9f\u884c\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u306a\u304fmain\u304c\u958b\u59cb\u70b9\u306b\u306a\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u5fd8\u308c\u3066\u3057\u307e\u3046\u3068\u601d\u308f\u306c\u52d5\u4f5c\u3092\u7523\u3093\u3067\u3057\u307e\u3046\u306e\u3067\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002(\u305d\u306e\u524d\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u6012\u3089\u308c\u308b\u3053\u3068\u304c\u307b\u3068\u3093\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u2026)<\/p>\n
fn<\/span> main<\/span>()<\/span> {<\/span>\r\n hello<\/span>(<\/span>\"hello, world from function\"<\/span>);<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> hello<\/span>(<\/span>message<\/span>:<\/span> &<\/span>str<\/span>)<\/span> {<\/span>\r\n println!<\/span>