{"id":44897,"date":"2023-08-05T18:18:07","date_gmt":"2024-02-10T10:48:10","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/44897-2\/"},"modified":"2024-04-30T17:10:28","modified_gmt":"2024-04-30T09:10:28","slug":"44897-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/44897-2\/","title":{"rendered":""},"content":{"rendered":"

Rust\u306b\u5c0e\u5165\u3055\u308c\u308b\u4e88\u5b9a\u306e\u65b0\u3057\u3044\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3\u3001Rust 2018\u306b\u3064\u3044\u3066\u3001\u30ea\u30ea\u30fc\u30b9\u524d\u306b\u5f97\u3089\u308c\u308b\u60c5\u5831\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

Rust 2018\u3068\u306f\u4f55\u304b<\/h1>\n

Rust\u516c\u5f0f\u30d6\u30ed\u30b0\u306e What is Rust 2018?\u3088\u308a\u3001\u5927\u96d1\u628a\u306b\u8981\u7d04\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n

Rust 2018\u3068\u306f\u3001\u7c21\u5358\u306b\u8a00\u3048\u3070C++\u306b\u304a\u3051\u308bC++11\u307f\u305f\u3044\u306a\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u307e\u3067\u306eRust\u306fRust 2015\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u3001Rust 2018\u3067\u306fRust 2015\u304b\u3089\u306e\u7834\u58ca\u7684\u5909\u66f4\u304c\u542b\u307e\u308c\u307e\u3059\u300212\/6\u306b\u30ea\u30ea\u30fc\u30b9\u4e88\u5b9a\u306eRust 1.31\u304c\u3001Rust 2018\u306e\u6700\u521d\u306e\u30ea\u30ea\u30fc\u30b9\u3068\u306a\u308b\u4e88\u5b9a\u3067\u3059\u3002Cargo.toml\u5185\u3067\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001Rust 2018\u306e\u6a5f\u80fd\u304c\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

Rust 2015\u3068\u306e\u4e92\u63db\u6027<\/h2>\n

Rust 2018\u306e\u30ea\u30ea\u30fc\u30b9\u5f8c\u3082\u3001Rust\u30b3\u30f3\u30d1\u30a4\u30e9\u306fRust 2015\u3067\u66f8\u304b\u308c\u305f\u30b3\u30fc\u30c9\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001Rust 2018\u304b\u3089Rust 2015\u3067\u66f8\u304b\u308c\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3046\u3053\u3068\u3082\u3001\u305d\u306e\u9006\u3082\u53ef\u80fd\u3067\u3059\u3002\u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u7570\u306a\u308b\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3\u306e\u30b3\u30fc\u30c9\u3092\u30ea\u30f3\u30af\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001Rust 2015\u304b\u30892018\u3078\u3068\u81ea\u52d5\u5909\u63db\u3059\u308b\u305f\u3081\u306e\u30c4\u30fc\u30ebcargo fix\u304c\u63d0\u4f9b\u3055\u308c\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n

Rust 2018\u30ea\u30ea\u30fc\u30b9\u5f8c\u306e\u958b\u767a\u306b\u3064\u3044\u3066<\/h2>\n

Rust 2018\u306e\u30ea\u30ea\u30fc\u30b9\u3068\u3044\u3046\u306e\u306f\u3001\u3042\u304f\u307e\u3067\u6700\u521d\u306e\u30ea\u30ea\u30fc\u30b9\u3067\u3042\u308b\u306b\u904e\u304e\u307e\u305b\u3093\u3002Rust 2018\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u5f8c\u3067\u3082\u3001Rust 2018\u3078\u306e\u6a5f\u80fd\u306e\u8ffd\u52a0\u306f\u7d9a\u3051\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u5fc5\u8981\u3067\u3042\u308c\u3070Rust 2015\u306b\u3082\u5909\u66f4\u304c\u52a0\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n

\u306a\u305c\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3\u3068\u3044\u3046\u5f62\u3092\u3068\u308b\u306e\u304b<\/h2>\n

\u30e6\u30fc\u30b6\u306e\u30b3\u30fc\u30c9\u3092\u7834\u58ca\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u7834\u58ca\u7684\u5909\u66f4\u3092\u53d6\u308a\u5165\u308c\u308b\u3053\u3068\u306e\u3067\u304d\u308b\u65b9\u6cd5\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n

\u307e\u305f\u3001Rust\u3067\u306f6\u9031\u9593\u3054\u3068\u306e\u30ea\u30ea\u30fc\u30b9\u3067\u7d30\u304b\u3044\u5909\u66f4\u3092\u7a4d\u307f\u91cd\u306d\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u3053\u308c\u306fRust\u306e\u5909\u5316\u3092\u8ffd\u3044\u7d9a\u3051\u308b\u3053\u3068\u3092\u96e3\u3057\u304f\u3057\u3066\u3044\u307e\u3059\u3002\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3\u3068\u3044\u3046\u5bc6\u306a\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u307e\u3067\u884c\u308f\u308c\u305f\u5909\u66f4\u3092\u5927\u304d\u306a\u8996\u70b9\u304b\u3089\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

Rust 2018\u3067\u306e\u5909\u66f4\u70b9<\/h1>\n

The Rust Edition Guide\u3092\u8aad\u3081\u3070\u3001\u4eca\u306e\u6240\u4e88\u5b9a\u3055\u308c\u3066\u3044\u308b\u5909\u66f4\u70b9\u3092\u4f3a\u3044\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3044\u304f\u3064\u304b\u4ee5\u4e0b\u306b\u7d39\u4ecb\u3057\u307e\u3059\u304c\u3001\u3053\u306e\u6587\u66f8\u81ea\u4f53\u304c\u66f8\u304d\u304b\u3051\u3067\u3001\u78ba\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n

\u8ffd\u8a18(2018\/11\/30)<\/p>\n

The Rust Edition Guide\u304c\u304b\u306a\u308a\u6574\u5099\u3055\u308c\u3001\u3069\u306e\u6a5f\u80fd\u304c\u3069\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306erustc\u304b\u3089\u5c0e\u5165\u3055\u308c\u308b\u304b\u308f\u304b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u307e\u305f\u3001async,await\u69cb\u6587\u306fRust 1.31\u6642\u70b9\u3067\u306f\u5c0e\u5165\u3055\u308c\u305a\u3001\u5b89\u5b9a\u5316\u306fRust 2018\u30ea\u30ea\u30fc\u30b9\u3088\u308a\u5f8c\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u8ffd\u8a18(2019\/11\/9)<\/p>\n

Rust 1.39\u306b\u3066\u3001async,await\u69cb\u6587\u304cstable\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u975e\u540c\u671f\u51e6\u7406<\/h2>\n

async\u3001await\u69cb\u6587\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u30e2\u30b8\u30e5\u30fc\u30eb<\/h2>\n

extern crate\u304c\u4e0d\u8981\u306b\u306a\u308a\u3001use\u6587\u3067\u4ed6\u30af\u30ec\u30fc\u30c8\u306e\u30b7\u30f3\u30dc\u30eb\u3092\u76f4\u63a5\u30a4\u30f3\u30dd\u30fc\u30c8\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u30d1\u30b9\u6307\u5b9a\u304c\u30af\u30ec\u30fc\u30c8\u540d\u3067\u59cb\u307e\u3063\u305f\u5834\u5408\u3001\u7d76\u5bfe\u30d1\u30b9\u3068\u3057\u3066\u8a8d\u8b58\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u6b21\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

mod<\/span> foo<\/span> {<\/span>\r\n    fn<\/span> bar<\/span>()<\/span> {<\/span>\r\n        let<\/span> a<\/span> =<\/span> std<\/span>::<\/span>boxed<\/span>::<\/span>Box<\/span>::<\/span>new<\/span>(<\/span>1<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
Rust 2015\u3067\u306f\u76f8\u5bfe\u30d1\u30b9\u306e\u305f\u3081\u3001foo\u306e\u4e2d\u306estd\u3068\u3044\u3046\u540d\u524d\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u63a2\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u304c\u3001Rust 2018\u3067\u306f\u671f\u5f85\u901a\u308a\u306bstd\u30af\u30ec\u30fc\u30c8\u5185\u306e\u30d1\u30b9\u3092\u305f\u3069\u3063\u3066\u304f\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u30d1\u30b9\u304ccrate\u3067\u59cb\u307e\u3063\u305f\u5834\u5408\u3001\u73fe\u5728\u306e\u30af\u30ec\u30fc\u30c8\u306e\u5148\u982d\u304b\u3089\u306e\u30d1\u30b9\u6307\u5b9a\u3068\u306a\u308a\u307e\u3059\u3002\u540c\u69d8\u306b\u3001self\u306f\u73fe\u5728\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3001super\u306f\u89aa\u30e2\u30b8\u30e5\u30fc\u30eb\u304b\u3089\u306e\u30d1\u30b9\u6307\u5b9a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
pub(crate)\u304ccrate\u306b\u5909\u66f4\u3055\u308c\u3001\u77ed\u304f\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30de\u30af\u30ed\u304cuse\u6587\u3067\u30a4\u30f3\u30dd\u30fc\u30c8\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u306a\u3069\u3001Rust\u306e\u4ed6\u306e\u30b7\u30f3\u30dc\u30eb\u3068\u540c\u69d8\u306b\u30e2\u30b8\u30e5\u30fc\u30eb\u30d9\u30fc\u30b9\u3067\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0<\/h2>\n
\u3044\u304f\u3064\u304b\u306e\u7701\u7565\u3057\u305f\u66f8\u304d\u65b9\u304c\u5c0e\u5165\u3055\u308c\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u3001fn\u3084impl\u5ba3\u8a00\u306b\u304a\u3044\u3066\u3001<>\u5185\u3067\u306e\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306e\u5ba3\u8a00\u304c\u7701\u7565\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u307e\u305f\u3001Non-lexical lifetime(NLL)\u304c\u5c0e\u5165\u3055\u308c\u307e\u3059\u3002Rust 2015\u3067\u306f\u3001\u30b9\u30b3\u30fc\u30d7\u7bc4\u56f2\u3092\u30d9\u30fc\u30b9\u306b\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u3092\u7ba1\u7406\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001NLL\u306b\u3088\u308a\u30b9\u30b3\u30fc\u30d7\u306b\u7e1b\u3089\u308c\u306a\u3044\u3082\u3063\u3068\u67d4\u8edf\u306a\u66f8\u304d\u65b9\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30c8\u30ec\u30a4\u30c8<\/h2>\n
impl Trait\u69cb\u6587\u3068dyn Trait\u69cb\u6587\u304c\u5c0e\u5165\u3055\u308c\u307e\u3059\u3002Rust 2018\u3067\u306f\u3001\u30c8\u30ec\u30a4\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u3046\u6642\u306f\u3001dyn Trait\u69cb\u6587\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001&Trait\u3088\u308a\u3082&dyn Trait\u3092\u4f7f\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u69cb\u6587\u306fRust 2015\u306b\u3082\u3059\u3067\u306b\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
Rust 2018\u3092\u8a66\u3059<\/h1>\n
Nightly\u30b3\u30f3\u30d1\u30a4\u30e9\u3067\u3001#![feature(rust_2018_preview)]\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n
#![feature(rust_2018_preview)]<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n}<\/span>\r\n\r\nmod<\/span> a<\/span> {<\/span>\r\n    pub<\/span> fn<\/span> foo<\/span>()<\/span> {<\/span>\r\n        let<\/span> _<\/span> =<\/span> std<\/span>::<\/span>boxed<\/span>::<\/span>Box<\/span>::<\/span>new<\/span>(<\/span>1<\/span>);<\/span> \/\/ \u65b0\u3057\u3044\u30d1\u30b9\u6307\u5b9a\u65b9\u6cd5<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
Cargo\u3092\u4f7f\u3046\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u3092Cargo.toml\u306b\u8ffd\u8a18\u3057\u307e\u3059\u3002\u3053\u3061\u3089\u3082Nightly\u304c\u5fc5\u8981\u3067\u3059\u3002main.rs\u3078\u306efeature\u306e\u6307\u5b9a\u306f\u4e0d\u8981\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n
cargo-features = [\"edition\"]\r\n\r\n[package]\r\nedition = '2018'\r\n<\/code><\/pre>\n
\u305f\u3060\u3057\u3001\u4ee5\u4e0a\u306e\u6307\u5b9a\u3092\u3057\u3066\u3082\u3001\u4e88\u5b9a\u3055\u308c\u3066\u3044\u308b\u6a5f\u80fd\u304c\u5168\u3066\u6709\u52b9\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3088\u3046\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001NLL\u3092\u6709\u52b9\u306b\u3059\u308b\u305f\u3081\u306b\u306f#![feature(nll)]\u306e\u8ffd\u52a0\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n
\n
Rust 2018\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u5f8c\u3067\u3082\u3001\u3053\u308c\u307e\u3067\u306eRust(Rust 2015)\u3067\u66f8\u304b\u308c\u305f\u30b3\u30fc\u30c9\u306f\u5f15\u304d\u7d9a\u304d\u4f7f\u3048\u308b\u3088\u3046\u3067\u3059\u306e\u3067\u3001\u3068\u308a\u3042\u3048\u305a\u3072\u3068\u5b89\u5fc3\u3068\u3044\u3046\u3068\u3053\u308d\u3067\u3057\u3087\u3046\u304b\u3002Rust 2018\u3067\u8d77\u3053\u308b\u5909\u66f4\u306f\u78ba\u5b9a\u3067\u306f\u306a\u304f\u3001issue\u3084\u30d5\u30a9\u30fc\u30e9\u30e0\u3067\u6d3b\u767a\u306a\u8b70\u8ad6\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u6700\u4e2d\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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