{"id":45703,"date":"2023-02-02T00:56:43","date_gmt":"2024-03-09T12:30:43","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45703-2\/"},"modified":"2024-04-29T12:40:36","modified_gmt":"2024-04-29T04:40:36","slug":"45703-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45703-2\/","title":{"rendered":""},"content":{"rendered":"

\u8ffd\u8a18 2019\/12\/06 17:14<\/h4>\n

@lo48576\u3055\u3093\u304c\u501f\u7528\u3084\u5f15\u6570\u306e\u8a55\u4fa1\u9806\u5e8f\u306b\u3064\u3044\u3066\u904e\u53bb\u306b\u8a18\u4e8b\u306b\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002
\n\u3053\u3053\u3067\u306f\u8aa4\u9b54\u5316\u3057\u3066\u66f8\u3044\u3066\u3044\u308bTwo-phase borrow\u3084\u8907\u5408\u4ee3\u5165\u6f14\u7b97\u5b50\u3067\u306e\u6319\u52d5\u306b\u3064\u3044\u3066\u3082\u8a00\u53ca\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u4f75\u305b\u3066\u304a\u8aad\u307f\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u30b3\u30e1\u30f3\u30c8\u6b04\u3067\u3082\u8a55\u4fa1\u9806\u5e8f\u3092\u5229\u7528\u3057\u305f\u304a\u3082\u3057\u308d\u3044\u30b3\u30fc\u30c9\u4f8b\u3082\u63d0\u793a\u3057\u3066\u304f\u3060\u3055\u3063\u3066\u3044\u307e\u3059\uff01<\/p>\n

\u304a\u3053\u3068\u308f\u308a<\/h1>\n

\u3053\u306e\u8a18\u4e8b\u306fRust\u306e\u95a2\u6570\u3084\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u306b\u95a2\u3059\u308b\u6319\u52d5\u3092\u8208\u5473\u7bc4\u56f2\u3067\u5927\u96d1\u628a\u306b\u8abf\u3079\u305f\u3082\u306e\u3067\u3059\u3002
\n\u307e\u305f\u5f53\u65b9\u3001rustc\u3084llvm\u3001MIR\u304c\u5206\u304b\u3089\u306a\u3044\u8edf\u5f31\u8005\u306a\u306e\u3067\u3001\u4e0d\u6b63\u78ba\u306a\u8a18\u8ff0\u304c\u3042\u308a\u307e\u3059\u3002
\n\u6e29\u304b\u3044\u76ee\u3067\u898b\u5b88\u3063\u3066\u3044\u305f\u3060\u3051\u308b\u3068\u5e78\u3044\u3067\u3059<\/p>\n

\u4e8b\u306e\u59cb\u307e\u308a<\/h1>\n

\u5148\u65e5C++\u3092\u66f8\u3044\u3066\u3044\u308b\u6642\u306b\u51fa\u4f1a\u3063\u3066\u3057\u307e\u3063\u305f\u4e8b\u4ef6\u3002
\n\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3044\u307e\u3057\u305f\u3002plus_one\u306fint& x\u3092\u53d7\u3051\u53d6\u3063\u3066x\u3092\u5909\u66f4\u3057\u3064\u3064\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

int<\/span> plus_one<\/span>(<\/span>int<\/span> &<\/span>x<\/span>)<\/span> {<\/span>\r\n    x<\/span> +=<\/span> 1<\/span>;<\/span>\r\n    return<\/span> x<\/span>;<\/span>\r\n}<\/span>\r\n\r\nvoid<\/span> print<\/span>(<\/span>int<\/span> x<\/span>,<\/span> int<\/span> y<\/span>)<\/span> {<\/span>\r\n    std<\/span>::<\/span>cout<\/span> <<<\/span> x<\/span> <<<\/span> \",\"<\/span> <<<\/span> y<\/span> <<<\/span> std<\/span>::<\/span>endl<\/span>;<\/span>\r\n}<\/span>\r\n\r\nint<\/span> main<\/span>()<\/span> {<\/span>\r\n    int<\/span> a<\/span> =<\/span> 0<\/span>;<\/span>\r\n    print<\/span>(<\/span>plus_one<\/span>(<\/span>a<\/span>),<\/span> a<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e45\u3057\u3076\u308a\u306bC++\u3092\u66f8\u3044\u3066\u3044\u308b\u3068\u66f8\u304b\u306a\u304f\u3066\u3082\u826f\u3044mut\u3092\u66f8\u3044\u305f\u308aconst\u3092\u66f8\u304d\u5fd8\u308c\u305f\u308a\u3057\u3061\u3083\u3044\u307e\u3059\u306d\u3002
\n\u305d\u308c\u306f\u3055\u3066\u304a\u304d\u3001\u3053\u306e\u30b3\u30fc\u30c9\u3092\u305d\u308c\u305e\u308c g++9.2.0 \u3068 clang++9.0.0 \u3067\u30b3\u30f3\u30d1\u30a4\u30eb&&\u5b9f\u884c\u3059\u308b\u3068\u3001<\/p>\n
$<\/span> .\/a.out\r\n1,0\r\n<\/span><\/code><\/pre>\n
$<\/span> .\/a.out\r\n1,1\r\n<\/span><\/code><\/pre>\n
\u3068\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3069\u3046\u3084\u3089\u672a\u898f\u5b9a\u52d5\u4f5c1\u3092\u8e0f\u3093\u3067\u3057\u307e\u3063\u305f\u3089\u3057\u304f\u3001
\n\u95a2\u6570\u547c\u3073\u51fa\u3057print(plus_one(), a)\u306e\u5f15\u6570plus_one()\u3068a\u306e\u8a55\u4fa1\u9806\u5e8f\u306f\u6c7a\u307e\u3063\u3066\u3044\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n
\u3053\u3046\u3044\u3046\u6319\u52d5\u3092\u77e5\u3063\u3066\u3057\u307e\u3063\u305f\u304b\u3089\u306b\u306fRust\u3067\u306e\u6319\u52d5\u3092\u77e5\u308a\u305f\u304f\u306a\u308b\u306e\u304cRustacean\u306e\u6027\u3067\u3059\u3002<\/p>\n
\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u5f15\u6570\u306e\u8a55\u4fa1\u9806\u5e8f<\/h1>\n
Rust\u3067\u540c\u69d8\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
fn<\/span> plus_one<\/span>(<\/span>x<\/span>:<\/span> &<\/span>mut<\/span> i32<\/span>)<\/span> -><\/span> i32<\/span> {<\/span>\r\n    *<\/span>x<\/span> +=<\/span> 1<\/span>;<\/span>\r\n    *<\/span>x<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> print_values<\/span>(<\/span>x<\/span>:<\/span> i32<\/span>,<\/span> y<\/span>:<\/span> i32<\/span>)<\/span> {<\/span>\r\n    println!<\/span>(<\/span>\"{},{}\"<\/span>,<\/span> x<\/span>,<\/span> y<\/span>);<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> a<\/span> =<\/span> 0<\/span>;<\/span>\r\n    print_values<\/span>(<\/span>plus_one<\/span>(<\/span>&<\/span>mut<\/span> a<\/span>),<\/span> a<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u3053\u308c\u3082rustc\u3067\u30b3\u30f3\u30d1\u30a4\u30eb&&\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n
$<\/span> .\/a\r\n1,1\r\n<\/span><\/code><\/pre>\n
\u3069\u3046\u3084\u3089clang\u3068\u540c\u69d8\u306b\u5de6\u304b\u3089\u53f3\u3078\u8a55\u4fa1\u3055\u308c\u308b\u3088\u3046\u3067\u3059<\/p>\n
\u3057\u304b\u3057C++\u3068\u9055\u3044\u3001Rust\u306e\u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u307b\u307crustc\u4e00\u629e2\u306a\u306e\u3067\u3001\u5076\u7136\u3053\u306e\u3088\u3046\u306a\u5b9f\u88c5\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304b\u3001\u8a55\u4fa1\u9806\u5e8f\u304c\u4ed5\u69d8\u3067\u6c7a\u3081\u3089\u308c\u3066\u3044\u308b\u306e\u304b\u3069\u3046\u304b\u5206\u304b\u308a\u307e\u305b\u3093\u3002\u78ba\u8a3c\u3092\u5f97\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u304c\u3001\u6b8b\u5ff5\u306a\u304c\u3089\u8abf\u3079\u3066\u307f\u305f\u3068\u3053\u308dThe Rust Reference\u306b\u306f\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u3068\u3053\u308d\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f3\u3002<\/p>\n
\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u3067\u306f\uff1f<\/h1>\n
\u95a2\u6570\u547c\u3073\u51fa\u3057\u3067\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306a\u6319\u52d5\u3092\u793a\u3057\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u3067\u306f\u3069\u3046\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n
struct<\/span> A<\/span> {<\/span>\r\n    value<\/span>:<\/span> i32<\/span>,<\/span>\r\n}<\/span>\r\n\r\nimpl<\/span> A<\/span> {<\/span>\r\n    fn<\/span> new<\/span>(<\/span>value<\/span>:<\/span> i32<\/span>)<\/span> -><\/span> Self<\/span> {<\/span>\r\n        Self<\/span> {<\/span> value<\/span> }<\/span>\r\n    }<\/span>\r\n\r\n    fn<\/span> print<\/span>(<\/span>self<\/span>,<\/span> value<\/span>:<\/span> i32<\/span>)<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{},{}\"<\/span>,<\/span> self<\/span>.value<\/span>,<\/span> value<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    {<\/span>println!<\/span>(<\/span>\"lhs\"<\/span>);<\/span> A<\/span>::<\/span>new<\/span>(<\/span>0<\/span>)}<\/span>.print<\/span>({<\/span>println!<\/span>(<\/span>\"rhs\"<\/span>);<\/span> 1<\/span>});<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
$<\/span> .\/a\r\nlhs\r\nrhs\r\n0,1\r\n<\/span><\/code><\/pre>\n
\u3084\u306f\u308a\u3053\u3053\u3067\u3082\u5de6\u304b\u3089\u53f3\u3078\u5b9f\u884c\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002\uff08\u9593\u306b\u631f\u307e\u3063\u3066\u308bprint\u306e\u5b9f\u884c\u304c\u6700\u5f8c\u3058\u3083\u306a\u3044\u304b\uff01\u3068\u3044\u3046\u7a81\u3063\u8fbc\u307f\u306f\u7121\u3057\u3067 \uff09<\/p>\n
\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306f\u7cd6\u8863\u69cb\u6587<\/h1>\n
Rust\u306e\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306f\u5e7e\u3064\u304b\u306e\u4ed6\u306e\u8a00\u8a9e4\u3068\u540c\u69d8\u306b\u4e00\u7a2e\u306e\u7cd6\u8863\u69cb\u6587\u306a\u306e\u3067\u3001\u3053\u306e\u6319\u52d5\u306f\u7406\u89e3\u3057\u3084\u3059\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
\/\/ \u4ee5\u4e0b\u306e\u4e8c\u3064\u306e\u30b3\u30fc\u30c9\u306f\u540c\u3058\u3002<\/span>\r\na<\/span>.print<\/span>(<\/span>1<\/span>);<\/span>\r\nA<\/span>::<\/span>print<\/span>(<\/span>a<\/span>,<\/span> 1<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u4e0a\u8a18\u306e\u4e8c\u3064\u306e\u30b3\u30fc\u30c9\u3067\u95a2\u6570\u547c\u3073\u51fa\u3057\u3068\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306f\u5171\u306ba\u21921\u306e\u9806\u306b\u8a55\u4fa1\u3055\u308c\u3066\u305d\u3046\u3067\u3059\u3002<\/p>\n
\u3055\u3089\u3063\u3068Rust\u306e\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306f\u7cd6\u8863\u69cb\u6587\u3060\u3068\u8a00\u3063\u3066\u5148\u306e\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3057\u305f\u304c\u3001\u5b9f\u306f\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u4e0a\u3067\u5b9a\u7fa9\u3057\u305fA::print\u306b\u95a2\u3057\u3066\u306f\u304a\u304a\u304b\u305f\u6b63\u3057\u3044\u306e\u3067\u3059\u304c\u3001\u4e00\u822c\u306b\u306f\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u81ea\u52d5\u53c2\u7167\u3001\u81ea\u52d5\u53c2\u7167\u5916\u3057<\/h2>\n
\u307e\u305a\u3001Rust\u306f\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306e\u969b\u3001\u81ea\u52d5\u53c2\u7167\u304a\u3088\u3073\u53c2\u7167\u5916\u3057\u304c\u884c\u308f\u308c\u307e\u30595\u3002
\n\u3064\u307e\u308a\u30e1\u30bd\u30c3\u30c9\u5ba3\u8a00\u306e\u7b2c\u4e00\u5f15\u6570\u306fself\u3001&self\u3001&mut self\u306e\u3044\u305a\u308c\u304b\u3067\u3042\u308b\u306e\u3067\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066*\u3001&\u3001&mut\u3092\u6e21\u3055\u308c\u305f\u5f15\u6570\u306b\u3064\u3051\u3066\u9069\u5207\u306a\u3082\u306e\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u53c2\u7167\u5916\u3057\u306e*\u306f\u5024\u304cCopy\u30c8\u30ec\u30a4\u30c8\u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u6642\u306e\u307f\u30b3\u30f3\u30d1\u30a4\u30eb\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
error[E0507]: cannot move out of `*b` which is behind a shared reference\r\n<\/span>  --><\/span> a.rs:20:5\r\n   |\r\n<\/span>20 |     b.print(1);<\/span>\r\n   |     ^ move occurs because `*b` has type `A`, which does not implement the `Copy` trait\r\n\r\nerror: aborting due to previous error\r\n\r\nFor more information about this error, try `rustc --explain E0507`.\r\n<\/span><\/code><\/pre>\n
\u30b3\u30fc\u30c9\u306b\u3057\u3066\u66f8\u3044\u3066\u307f\u308b\u3068\u3001x.method(y)\u306f\u5fc5\u8981\u304c\u3042\u308c\u3070\u4ee5\u4e0b\u306e\u3044\u305a\u308c\u304b\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\n
(<\/span>*<\/span>x<\/span>)<\/span>.method<\/span>(<\/span>y<\/span>)<\/span>     \/\/ \u53c2\u7167\u5916\u3057<\/span>\r\n(<\/span>&<\/span>x<\/span>)<\/span>.method<\/span>(<\/span>y<\/span>)<\/span>     \/\/ \u53c2\u7167\uff08\u4e0d\u5909\uff09<\/span>\r\n(<\/span>&<\/span>mut<\/span> x<\/span>)<\/span>.method<\/span>(<\/span>y<\/span>)<\/span> \/\/ \u53c2\u7167\uff08\u53ef\u5909\uff09<\/span>\r\n<\/code><\/pre>\n
\u8131\u7cd6\u8863<\/h2>\n
\u81ea\u52d5\u53c2\u7167\u3001\u53c2\u7167\u5916\u3057\u304c\u306a\u3055\u308c\u305f\u5f8c\u306fX::method(x, y)\u306e\u3088\u3046\u306a\u5f62\u306b\u8131\u7cd6\u8863\u3055\u308c\u307e\u3059\u3002
\n\u304c\u3001method\u304c&mut self\u3092\u53d7\u3051\u53d6\u308b\u6642\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7279\u6b8a\u306a\u6319\u52d5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
{<\/span>\r\n    let<\/span> tmp1<\/span> =<\/span> y<\/span>;<\/span>\r\n    let<\/span> tmp0<\/span> =<\/span> &<\/span>mut<\/span> x<\/span>;<\/span>\r\n    X<\/span>::<\/span>method<\/span>(<\/span>tmp0<\/span>,<\/span> tmp1<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c\u4e00\u5f15\u6570\u306e\u8a55\u4fa1\uff08\u81ea\u52d5\u53c2\u7167\uff09\u306f\u6700\u5f8c\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6319\u52d5\u306b\u3088\u3063\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
let<\/span> mut<\/span> vec<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>];<\/span>\r\nvec<\/span>.push<\/span>(<\/span>vec<\/span>.len<\/span>());<\/span>\r\nassert_eq!<\/span>(<\/span>vec<\/span>,<\/span> vec!<\/span>[<\/span>0<\/span>,<\/span> 1<\/span>]);<\/span>\r\n<\/code><\/pre>\n
\u3082\u3057\u3053\u306e\u30b3\u30fc\u30c9\u306e\uff12\u884c\u76ee\u3092tmp0\u3084tmp1\u3092\u7528\u3044\u305a\u306b\u8131\u7cd6\u8863\u3059\u308b\u306a\u3089\u3070<\/p>\n
Vec<\/span>::<\/span>push<\/span>(<\/span>&<\/span>mut<\/span> vec<\/span>,<\/span> vec<\/span>.len<\/span>());<\/span>\r\n<\/code><\/pre>\n
\u306e\u3088\u3046\u306b\u306a\u308a\u3001borrow\u30c1\u30a7\u30c3\u30ab\u30fc\u306b\u6012\u3089\u308c\u307e\u3059<\/p>\n
     Vec::push(&mut vec, vec.len());<\/span>\r\n     --------- --------  ^^^ immutable borrow occurs here\r\n     |         |\r\n     |         mutable borrow occurs here\r\n     mutable borrow later used by call\r\n<\/span><\/code><\/pre>\n
\u3061\u306a\u307f\u306b\u3001vec.push(vec.len())\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306f\u6bd4\u8f03\u7684\u65b0\u3057\u3044rustc\u3067\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u304d\u307e\u3059\u304c\u3001NLL\u304c\u5c0e\u5165\u3055\u308c\u308b\u524d\u306erustc\u306b\u306f\u666e\u901a\u306b\u6012\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u6319\u52d5\u304c\u3067\u304d\u308b\u306e\u306fNLL\u5c0e\u5165\u6642\u306b\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306b\u3064\u3044\u3066\u6574\u5099\u3055\u308c\u305f\u3053\u3068\u306b\u3088\u308b\u5bc4\u4e0e\u304c\u5927\u304d\u3044\u3088\u3046\u3067\u3059\u3002NLL\u3055\u307e\u3055\u307e\u3067\u3059\u306d\u3002<\/p>\n
\u3055\u3044\u3054\u306b<\/h1>\n
\u3053\u3053\u3067\u306f\u3042\u304f\u307e\u3067\u3001\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306f\u305f\u3060\u306e\u7cd6\u8863\u69cb\u6587\u3067\u8131\u7cd6\u8863\u3055\u308c\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u308b\u3088\u3046\u306a\u66f8\u304d\u65b9\u3092\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5b9f\u969b\u306f\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u3092\u56de\u907f\u3059\u3079\u304f\u3084\u3084\u3053\u3057\u3044\u4e8b\u3092\u884c\u3063\u3066\u3044\u308b\u3088\u3046\u3067\u30596\u3002\u3053\u3053\u3089\u306b\u3064\u3044\u3066\u306f\u8208\u5473\u672c\u4f4d\u3067\u8abf\u3079\u3066\u307f\u305f\u306f\u3044\u3044\u3082\u306e\u306e\u3001\u5b9f\u529b\u4e0d\u8db3\u3067\u3075\u308f\u3063\u3068\u3057\u305f\u7406\u89e3\u3057\u304b\u3067\u304d\u305a\u3001\u66d6\u6627\u306a\u8a18\u4e8b\u3092\u66f8\u304f\u3053\u3068\u306b\u306a\u3063\u3066\u7533\u3057\u8a33\u306a\u3044\u3067\u3059\u3002
\n\u8fd1\u3044\u3046\u3061\u306bMIR\u306e\u52c9\u5f37\u304c\u3066\u3089\u3001\u4eca\u56de\u53c2\u8003\u306b\u3057\u305fRFC2025\u306e\u7ffb\u8a33\u3092\u3057\u3064\u3064\u7406\u89e3\u3092\u6df1\u3081\u308c\u308c\u3070\u306a\u3041\u3068\u601d\u3046\u6b21\u7b2c\u3067\u3059\u3002<\/p>\n
\n
\u5f53\u65b9C++\u5b8c\u5168\u7406\u89e3\u8005\u3067\u306f\u306a\u3044\u306e\u3067\u300c\u672a\u898f\u5b9a\u52d5\u4f5c\u300d\u306b\u3064\u3044\u3066\u306f \u3053\u3061\u3089\u306e\u8a18\u4e8b \u306a\u3069\u3092\u3042\u305f\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u00a0\u21a9<\/p>\n
\u4ed6\u306eRust\u30b3\u30f3\u30d1\u30a4\u30e9\u3068\u3057\u3066\u306f\u300cmrustc\u300d\u304c\u3042\u308a\u307e\u3059\u304c\u8a66\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u00a0\u21a9<\/p>\n
The Rust Reference\u306b\u660e\u8a18\u3057\u3088\u3046\u3068\u3044\u3046 Issue \u306f\u7acb\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u4e2d\u306e\u4eba\u305f\u3061\u3082LTR(Left to Right)\u304c\u59a5\u5f53\u3060\u3068\u3044\u3046\u611f\u3058\u3067\u3057\u305f\u3002\u00a0\u21a9<\/p>\n
Python\u3068\u304bD\u8a00\u8a9e\u3068\u304b\u3002D\u8a00\u8a9e\u3067\u306fUFCS\u3068\u547c\u3076\u3089\u3057\u3044\u3067\u3059\u304c\u3001Rust\u306e\u6319\u52d5\u306f\u305d\u308c\u3068\u306f\u5c11\u3057\u9055\u3044\u307e\u3059\u3002D\u8a00\u8a9e\u306eUFCS\u306b\u3064\u3044\u3066\u306f \u3053\u3061\u3089\u306e\u8a18\u4e8b \u3092\u3001Rust\u306fUFCS\u3068\u306f\u9055\u3046\u3088\u306d\u3063\u3066\u3044\u3046\u8a71\u306f \u3053\u3061\u3089 \u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002\u00a0\u21a9<\/p>\n
cf. \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9eRust, 2nd Edition\/\u30e1\u30bd\u30c3\u30c9\u8a18\u6cd5\u00a0\u21a9<\/p>\n
cf. RFC2025\u00a0\u21a9<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u8ffd\u8a18 2019\/12\/06 17:14 @lo48576\u3055\u3093\u304c\u501f\u7528\u3084\u5f15\u6570\u306e\u8a55\u4fa1\u9806\u5e8f\u306b\u3064\u3044\u3066\u904e\u53bb\u306b\u8a18\u4e8b\u306b\u3055\u308c\u3066\u3044 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45703","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45703-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u8ffd\u8a18 2019\/12\/06 17:14 @lo48576\u3055\u3093\u304c\u501f\u7528\u3084\u5f15\u6570\u306e\u8a55\u4fa1\u9806\u5e8f\u306b\u3064\u3044\u3066\u904e\u53bb\u306b\u8a18\u4e8b\u306b\u3055\u308c\u3066\u3044 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45703-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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