{"id":45709,"date":"2023-09-03T16:57:02","date_gmt":"2023-08-19T18:14:07","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45709-2\/"},"modified":"2024-04-30T21:24:54","modified_gmt":"2024-04-30T13:24:54","slug":"45709-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45709-2\/","title":{"rendered":""},"content":{"rendered":"

Rust\u306eFuture\u3068async\/await\u306f\u3001\u300c\u6642\u9593\u306e\u304b\u304b\u308b\u51e6\u7406\u300d\u3092\u3059\u308b\u3068\u304d\u306b\u3001\u300c\u51e6\u7406\u304c\u7d42\u308f\u308b\u307e\u3067OS\u30b9\u30ec\u30c3\u30c9\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b(\u540c\u671fRust)\u300d\u306e\u3067\u306f\u306a\u304f\u3001\u300c\u5f53\u8a72\u51e6\u7406\u3092\u4e2d\u65ad\u3057\u3066\u3001\u305d\u306eOS\u30b9\u30ec\u30c3\u30c9\u3092\u5225\u306e\u30bf\u30b9\u30af\u306e\u51e6\u7406\u306b\u4f7f\u3046(\u975e\u540c\u671fRust)\u300d\u3053\u3068\u3067\u3001\u30b9\u30ec\u30c3\u30c9\u6570\u3088\u308a\u3082\u591a\u304f\u306e\u51e6\u7406\u3092\u540c\u6642\u306b\u884c\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n

\u540c\u671fRust\u3068\u975e\u540c\u671fRust\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a2\u30ca\u30ed\u30b8\u30fc\u304c\u6210\u7acb\u3057\u307e\u3059\u3002<\/p>\n

\n
\n\u540c\u671fRust\u975e\u540c\u671fRust\u30b9\u30ec\u30c3\u30c9OS\u30b9\u30ec\u30c3\u30c9\u30bf\u30b9\u30af\u30e9\u30f3\u30bf\u30a4\u30e0OS\u81ea\u8eabtokio\u3084romio\/juliex\u306a\u3069\u306e\u30e9\u30f3\u30bf\u30a4\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\u3059\u3050\u7d42\u308f\u308b\u51e6\u7406fn(T) -> U<\/code>fn(T) -> U<\/code>\u2026\u2026\u306e\u4f5c\u6210fn() {}<\/code>fn() {}<\/code>\u2026\u2026\u306e\u547c\u3073\u51fa\u3057f()<\/code>f()<\/code>\u6642\u9593\u306e\u304b\u304b\u308b\u51e6\u7406fn(T) -> U<\/code>fn(T) -> impl Future<Output = U><\/code>\u2026\u2026\u306e\u4f5c\u6210fn() {}<\/code>async fn() {}<\/code>\u2026\u2026\u306e\u547c\u3073\u51fa\u3057f()<\/code>f().await<\/code><\/div>\n<\/div>\n

\u540c\u671fRust\u304b\u3089\u975e\u540c\u671fRust\u3078\u306e\u79fb\u884c\u306f\u3001\u304a\u304a\u3088\u305d\u3053\u306e\u30a2\u30ca\u30ed\u30b8\u30fc\u306b\u3057\u305f\u304c\u3063\u3066\u884c\u3048\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002 (\u30e9\u30a4\u30d6\u30e9\u30ea\u30fb\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3082\u540c\u69d8\u306b\u79fb\u884c\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002)<\/p>\n

\u3068\u306f\u3044\u3048\u3001\u5358\u7d14\u7f6e\u63db\u3067\u79fb\u884c\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u4ee5\u4e0b\u3067async\/await\u3092\u30b9\u30e0\u30fc\u30ba\u306b\u4f7f\u3046\u305f\u3081\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

futures\/futures01\/futures-preview\u30af\u30ec\u30fc\u30c8<\/h2>\n

futures\u306f\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30d9\u30fc\u30b9\u306b\u306a\u3063\u3066\u3044\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002<\/p>\n

futures\u306b\u306f\u4e3b\u306b2\u3064\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \n
  • \n
      0.1\u7cfb\u3002async\/await\u304c\u306a\u304b\u3063\u305f\u9803\u306b\u4f5c\u3089\u308c\u305f\u975e\u540c\u671f\u51e6\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3002<\/ul>\n<\/li>\n<\/ul>\n

       <\/p>\n

        0.3\u7cfb\u3002async\/await\u3092\u5ff5\u982d\u306b\u7f6e\u3044\u3066\u6574\u7406\u3055\u308c\u3066\u3044\u308b\u3002<\/ul>\n

        \u4eca\u3042\u308b\u975e\u540c\u671f\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306f0.1\u7cfb\u30d9\u30fc\u30b9\u306e\u3082\u306e\u304c\u591a\u3044\u306e\u3067\u3001\u4e92\u63db\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u304f\u306e\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n

        # futures01\u306ffutures\u306e0.1\u7cfb\u3092\u6307\u3057\u7d9a\u3051\u308b\u30af\u30ec\u30fc\u30c8\u3002<\/span>\r\n# 0.3\u3068\u4f75\u5b58\u3055\u305b\u308b\u305f\u3081\u306b\u4f7f\u3046<\/span>\r\nfutures01<\/span> =<\/span> \"0.1.28\"<\/span>\r\n# 0.3\u7cfb\u5217\u306f\u307e\u3060preview\u7248\u306e\u305f\u3081\u3001\u5225\u306e\u540d\u524d\u3067\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u3002<\/span>\r\n# \u305d\u306e\u3046\u3061futures\u306b\u30ea\u30cd\u30fc\u30e0\u3055\u308c\u308b<\/span>\r\nfutures-preview<\/span> =<\/span> {<\/span> version<\/span> =<\/span> \"0.3.0-alpha.17\"<\/span>,<\/span> features<\/span> =<\/span> [\"io-compat\"]<\/span> }<\/span>\r\n<\/code><\/pre>\n
        use<\/span> futures<\/span>::<\/span>prelude<\/span>::<\/span>*<\/span>;<\/span>\r\n<\/code><\/pre>\n
        futures\u30af\u30ec\u30fc\u30c8\u306b\u306f\u3001\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u975e\u540c\u671f\u7248\u304c\u3044\u304f\u3064\u304b\u540c\u68b1\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
        \n
        \n\u540c\u671fRust\u975e\u540c\u671fRustMutexstd::sync::Mutex<\/code>futures::lock::Mutex<\/code>\u30c1\u30e3\u30cd\u30ebstd::sync::mpsc<\/code>futures::channel::mpsc<\/code><\/p>\n
        futures::channel::oneshot<\/code>\u30a4\u30c6\u30ec\u30fc\u30bfstd::iter::Iterator<\/code>futures::stream::Stream<\/code><\/div>\n<\/div>\n
        futures\u306e\u4e92\u63db\u6027<\/h2>\n
        \u524d\u7bc0\u306e\u30b3\u30fc\u30c9\u4f8b\u306b\u3042\u308b features = [“io-compat”] \u3092\u4f7f\u3046\u3068\u3001futures 0.1\u7cfb\u3092\u4f7f\u3063\u3066\u3044\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u76f8\u4e92\u904b\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
        use<\/span> futures<\/span>::<\/span>prelude<\/span>::<\/span>*<\/span>;<\/span> \/\/ TryFuture\u304c\u5165\u3063\u3066\u3044\u308b<\/span>\r\n\r\nlet<\/span> fut01<\/span> =<\/span> async<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n}<\/span>.boxed<\/span>()<\/span>.compat<\/span>();<\/span> \/\/ futures01::future::Future\u306b\u5909\u63db\u3055\u308c\u308b<\/span>\r\n<\/code><\/pre>\n
        use<\/span> futures<\/span>::<\/span>compat<\/span>::<\/span>*<\/span>;<\/span> \/\/ Future01CompatExt\u304c\u5165\u3063\u3066\u3044\u308b<\/span>\r\n\r\nlet<\/span> fut01<\/span> =<\/span> ...<\/span>;<\/span>\r\nlet<\/span> fut03<\/span> =<\/span> fut01<\/span>.compat<\/span>();<\/span> \/\/ futures::future::Future\u306b\u5909\u63db\u3055\u308c\u308b<\/span>\r\n<\/code><\/pre>\n
        \u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406<\/h2>\n
        \u30b9\u30c8\u30ea\u30fc\u30e0\u3092 for \u3067\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u69cb\u6587\u306f\u5c06\u6765\u7684\u306b\u306f\u5165\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3059\u3050\u306b\u306f\u5165\u3089\u306a\u3044\u4e88\u5b9a\u3067\u3059\u3002 while let \u3067\u51e6\u7406\u3059\u308b\u306e\u304c\u30a4\u30c7\u30a3\u30aa\u30de\u30c6\u30a3\u30c3\u30af\u3067\u3059\u3002<\/p>\n
        let<\/span> mut<\/span> stream<\/span> =<\/span> ...<\/span>;<\/span>\r\n\/\/ pin_utils::pin_mut!(stream); \/\/ \u5834\u5408\u306b\u3088\u3063\u3066\u306f\u5fc5\u8981<\/span>\r\nwhile<\/span> let<\/span> Some<\/span>(<\/span>item<\/span>)<\/span> =<\/span> stream<\/span>.next<\/span>()<\/span>.await<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        runtime\u30af\u30ec\u30fc\u30c8<\/h2>\n
        runtime\u306f\u3001\u975e\u540c\u671f\u30e9\u30f3\u30bf\u30a4\u30e0\u3092\u307e\u3068\u307e\u3063\u305f\u5f62\u3067\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3092\u76ee\u6307\u3057\u3066\u3044\u308b\u30af\u30ec\u30fc\u30c8\u3067\u3059\u3002\u975e\u540c\u671f\u30e9\u30f3\u30bf\u30a4\u30e0\u306e\u7acb\u3061\u4e0a\u3052\u3092\u7c21\u7565\u5316\u3059\u308b\u305f\u3081\u306e\u5c5e\u6027\u30de\u30af\u30ed\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
        runtime<\/span> =<\/span> \"0.3.0-alpha.6\"<\/span>\r\n<\/code><\/pre>\n
        #![feature(async_await)]<\/span>\r\n\r\nuse<\/span> runtime<\/span>::<\/span>prelude<\/span>::<\/span>*<\/span>;<\/span>\r\n\r\n#[runtime::main]<\/span>\r\nasync<\/span> fn<\/span> main<\/span>()<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n}<\/span>\r\n\r\n#[runtime::test]<\/span>\r\nasync<\/span> fn<\/span> test_foo<\/span>()<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u30bf\u30b9\u30af\u306e\u8d77\u52d5\u3084\u975e\u540c\u671f\u30bd\u30b1\u30c3\u30c8\u306e\u7acb\u3061\u4e0a\u3052\u3001\u30bf\u30a4\u30de\u30fc\u306a\u3069\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u88cf\u5074\u306e\u30e9\u30f3\u30bf\u30a4\u30e0\u5b9f\u88c5 (tokio\u307e\u305f\u306fromio\/juliex) \u3084\u30bf\u30a4\u30de\u30fc\u5b9f\u88c5 (futures-timer) \u306b\u79fb\u8b72\u3055\u308c\u307e\u3059\u3002<\/p>\n
        \/\/ \u30bf\u30b9\u30af\u306e\u8d77\u52d5<\/span>\r\nlet<\/span> handle<\/span> =<\/span> runtime<\/span>::<\/span>spawn<\/span>(<\/span>async<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n});<\/span>\r\nhandle<\/span>.await<\/span>;<\/span>\r\n<\/code><\/pre>\n
        use<\/span> runtime<\/span>::<\/span>net<\/span>::<\/span>TcpListener<\/span>;<\/span>\r\n\/\/ \u975e\u540c\u671f\u30bd\u30b1\u30c3\u30c8<\/span>\r\nlet<\/span> listener<\/span> =<\/span> TcpListener<\/span>::<\/span>bind<\/span>(<\/span>\"127.0.0.1:8080\"<\/span>)<\/span>?<\/span>;<\/span>\r\n\/\/ ...<\/span>\r\n<\/code><\/pre>\n
        use<\/span> std<\/span>::<\/span>time<\/span>::<\/span>Duration<\/span>;<\/span>\r\nuse<\/span> runtime<\/span>::<\/span>time<\/span>::<\/span>Delay<\/span>;<\/span>\r\n\/\/ \u30bf\u30a4\u30de\u30fc<\/span>\r\nDelay<\/span>::<\/span>new<\/span>(<\/span>Duration_from_secs<\/span>(<\/span>1<\/span>))<\/span>.await<\/span>\r\n<\/code><\/pre>\n
        \n
        \n\u540c\u671fRust\u975e\u540c\u671fRustmainfn main() {}<\/code>#[runtime::main] async fn main() {}<\/code>test#[test] fn test() {}<\/code>#[runtime::test] async fn test() {}<\/code>bench#[bench] fn bench() {}<\/code>#[runtime::bench] async fn bench() {}<\/code>\u30b9\u30ec\u30c3\u30c9\u8d77\u52d5std::thread::spawn<\/code>runtime::spawn<\/code>\u30b9\u30ec\u30c3\u30c9\u306ejoinhandle.join()<\/code>handle.await<\/code>UDPstd::net::UdpSocket<\/code>runtime::net::UdpSocket<\/code>TCP\u30ea\u30b9\u30ca\u30fcstd::net::TcpListener<\/code>runtime::net::TcpListener<\/code>TCP\u63a5\u7d9astd::net::TcpStream<\/code>runtime::net::TcpStream<\/code>\u30b9\u30ea\u30fc\u30d7std::thread::sleep();<\/code>runtime::time::Delay::new().await;<\/code><\/div>\n<\/div>\n
        hyper\u3068\u306e\u76f8\u4e92\u904b\u7528<\/h2>\n
        hyper\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u81ea\u524d\u306etokio\u30e9\u30f3\u30bf\u30a4\u30e0\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002runtime\u30af\u30ec\u30fc\u30c8\u3092\u4f7f\u3046\u5834\u5408\u306b\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e rt feature\u3092\u7121\u52b9\u5316\u3057\u3066\u304a\u3044\u305f\u307b\u3046\u304c\u7121\u96e3\u3067\u3059\u3002<\/p>\n
        hyper<\/span> =<\/span> {<\/span> version<\/span> =<\/span> \"0.12.33\"<\/span>,<\/span> default-features<\/span> =<\/span> false<\/span> }<\/span>\r\n<\/code><\/pre>\n
        use<\/span> futures<\/span>::<\/span>compat<\/span>::<\/span>Compat<\/span>;<\/span>\r\nuse<\/span> hyper<\/span>::<\/span>server<\/span>::<\/span>Server<\/span>;<\/span>\r\n\r\n\/\/ runtime\u306espawner\u3068listener\u3092\u4f7f\u3046<\/span>\r\nlet<\/span> listener<\/span> =<\/span> ...<\/span>;<\/span>\r\nlet<\/span> incoming<\/span> =<\/span> listener<\/span>.incoming<\/span>()<\/span>.map_ok<\/span>(<\/span>Compat<\/span>::<\/span>new<\/span>)<\/span>.compat<\/span>();<\/span>\r\n\r\nlet<\/span> server<\/span> =<\/span> Server<\/span>::<\/span>builder<\/span>(<\/span>incoming<\/span>)<\/span>\r\n    .executor<\/span>(<\/span>Compat<\/span>::<\/span>new<\/span>(<\/span>runtime<\/span>::<\/span>task<\/span>::<\/span>Spawner<\/span>::<\/span>new<\/span>()))<\/span>\r\n    .serve<\/span>(<\/span>...<\/span>)<\/span>\r\n    .compat<\/span>();<\/span>\r\nserver<\/span>.await<\/span>;<\/span>\r\n<\/code><\/pre>\n
        async-trait<\/h2>\n
        async fn\u306f\u30c8\u30ec\u30a4\u30c8\u3084\u305d\u306e\u5b9f\u88c5\u5185\u3067\u306f\u4f7f\u3048\u307e\u305b\u3093\u3002\u30c8\u30ec\u30a4\u30c8\u5185async fn\u306e\u5b9f\u73fe\u306b\u306f\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u95a2\u9023\u578b (Generic Associated Type; GAT) \u3068\u5b58\u5728\u578b (existential type)\u304c\u5fc5\u8981\u3067\u3001\u3069\u3061\u3089\u3082\u5b9f\u88c5\u9014\u4e0a\u3067\u3059\u3002<\/p>\n
        \u307e\u305f\u3001\u30c8\u30ec\u30a4\u30c8\u5185async fn\u304c\u5b9f\u88c5\u3055\u308c\u305f\u3068\u3057\u3066\u3082\u3001async fn\u3092\u542b\u3080\u30c8\u30ec\u30a4\u30c8\u306f\u95a2\u9023\u578b\u3092\u542b\u3080\u305f\u3081\u30c8\u30ec\u30a4\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5316\u304c\u4e0d\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
        \u3067\u306f\u975e\u540c\u671f\u95a2\u6570\u3092\u542b\u3080\u30c8\u30ec\u30a4\u30c8\u3092\u4f5c\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u304b\u3068\u3044\u3046\u3068\u3001 BoxFuture \u3092\u8fd4\u3059\u3088\u3046\u306b\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u3002<\/p>\n
        pub<\/span> trait<\/span> Foo<\/span> {<\/span>\r\n    fn<\/span> foo<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> BoxFuture<\/span><<\/span>'_<\/span>,<\/span> i32<\/span>><\/span> {<\/span>\r\n        async<\/span> {<\/span> 42<\/span> }<\/span>.boxed<\/span>()<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nimpl<\/span> Foo<\/span> for<\/span> ()<\/span> {<\/span>\r\n    fn<\/span> foo<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> BoxFuture<\/span><<\/span>'_<\/span>,<\/span> i32<\/span>><\/span> {<\/span>\r\n        async<\/span> {<\/span> 84<\/span> }<\/span>.boxed<\/span>()<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u3053\u308c\u306f\u3084\u3084\u9762\u5012\u3067\u3059\u3002\u8907\u6570\u306e\u53c2\u7167\u3092\u53d6\u308b\u30e1\u30bd\u30c3\u30c9\u306b\u306a\u308b\u3068\u8a71\u306f\u3055\u3089\u306b\u3084\u3084\u3053\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
        async-trait\u30af\u30ec\u30fc\u30c8\u306b\u3042\u308b async_trait \u5c5e\u6027\u30de\u30af\u30ed\u3092\u4f7f\u3046\u3068\u3001\u3053\u308c\u3092\u3088\u308a\u81ea\u7136\u306b\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
        #[async_trait]<\/span>\r\npub<\/span> trait<\/span> Foo<\/span> {<\/span>\r\n    async<\/span> fn<\/span> foo<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> i32<\/span> {<\/span>\r\n        42<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n#[async_trait]<\/span>\r\nimpl<\/span> Foo<\/span> for<\/span> ()<\/span> {<\/span>\r\n    async<\/span> fn<\/span> foo<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> i32<\/span> {<\/span>\r\n        84<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u307e\u3068\u3081<\/h2>\n
        async\/await\u3078\u306e\u79fb\u884c\u3092\u5bb9\u6613\u306b\u3059\u308b\u4ee5\u4e0b\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n
          \n
        • \n
            futures\u30af\u30ec\u30fc\u30c8\u306e\u4e92\u63db\u6027<\/ul>\n<\/li>\n<\/ul>\n
             <\/p>\n
              \n
            • \n
                stream\u306b\u5bfe\u3059\u308bfor\u69cb\u6587\u306e\u4ee3\u66ff<\/ul>\n<\/li>\n<\/ul>\n
                 <\/p>\n
                  \n
                • \n
                    runtime\u30af\u30ec\u30fc\u30c8<\/ul>\n<\/li>\n<\/ul>\n
                     <\/p>\n
                      \n
                    • \n
                        hyper\u3068\u306e\u76f8\u4e92\u904b\u7528<\/ul>\n<\/li>\n<\/ul>\n
                        async_trait \u30de\u30af\u30ed<\/p>\n","protected":false},"excerpt":{"rendered":"
                        Rust\u306eFuture\u3068async\/await\u306f\u3001\u300c\u6642\u9593\u306e\u304b\u304b\u308b\u51e6\u7406\u300d\u3092\u3059\u308b\u3068\u304d\u306b\u3001\u300c\u51e6\u7406\u304c\u7d42\u308f\u308b\u307e\u3067OS\u30b9\u30ec […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45709","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\/45709-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Rust\u306eFuture\u3068async\/await\u306f\u3001\u300c\u6642\u9593\u306e\u304b\u304b\u308b\u51e6\u7406\u300d\u3092\u3059\u308b\u3068\u304d\u306b\u3001\u300c\u51e6\u7406\u304c\u7d42\u308f\u308b\u307e\u3067OS\u30b9\u30ec […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45709-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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