[B! async] nantanã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

nantan id:nantan

asyncã«é–¢ã™ã‚‹nantanã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (10)

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async/await ã¯ Promise ã‚’ç½®ãæ›ãˆãªã„ - Okapies' Archive
ã¾ã¨ã‚ async/await æ§‹æ–‡ã¯ã€Promise ã§æ›¸ã‘ã‚‹å‡¦ç†ã®ã†ã¡ç‰¹å®šã®ã‚±ãƒ¼ã‚¹ã—ã‹è¡¨ç¾ã§ããªã„ ç‰¹å®šã®ã‚±ãƒ¼ã‚¹ã¨ã¯ã€ã‚ã‚‹éžåŒæœŸå‡¦ç†ã®å‰å‡¦ç†ã¨å¾Œå‡¦ç†ãŒãã‚Œãžã‚Œ 1 å€‹ãšã¤ã®å ´åˆã®ã¿ã§ã‚ã‚‹ async/await æ§‹æ–‡ã¯åˆå¿ƒè€…ã«éžåŒæœŸå‡¦ç†ã‚’å°Žå…¥ã™ã‚‹éš›ã«é©ã—ã¦ã„ã‚‹ãŒã€éžåŒæœŸå‡¦ç†ã‚’é€æ¬¡å‡¦ç†ã¨ã—ã¦æ›¸ã‘ã‚‹ã¨ã„ã†å¹»æƒ³ã‚’ä¸Žãˆã‚‹ã®ã§ã€ã©ã“ã‹ã§çŸ¥è˜ã‚’ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã™ã‚‹æ©Ÿä¼šã‚’è¨ã‘ã‚‹ã¹ãã§ã‚ã‚‹ ã“ã®è¨˜äº‹ã¯ãªã«ï¼Ÿ å°‘ã—ãƒã‚ºã£ãŸã®ã§ã¾ã¨ã‚ã¦ãŠã“ã†ã‹ã¨ã€‚ ã€Œasync/await ãŒã‚ã‚Œã° Promise ãªã‚“ã¦é›£ã—ã„ã‚‚ã®ã¯è¦ã‚‰ãªã„ï¼ã€ã¨ã‹è¨€ã£ã¦ã‚‹ã‚¦ãƒ–ãªåã«ã€è¤‡æ•°ã® API ã«ä¸¦åˆ—ã«ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’æŠ•ã’ã¦ä¸€ã¤ä»¥ä¸ŠæˆåŠŸã—ãŸæ™‚ã ã‘å…ˆã«é€²ã‚€ã€ã¿ãŸã„ãªå•é¡Œã‚’ä¸Žãˆã¦æ„›ã§ã¦ã¿ãŸã„ã€‚â€” Yuta Okamoto (@okapies) 2020å¹´12æœˆ11æ—¥ async/await ã¯ Promise ã®ãƒã‚¹ãƒˆã‚’æ‰‹ç¶šãçš„ãªã‚³ãƒ¼ãƒ‰ã«è¦‹ãˆ
nantan 2021/02/02
Promise

async

javascript
ãƒªãƒ³ã‚¯
async/awaitã‚’ä½¿ã£ãŸéžåŒæœŸå‡¦ç†ã®æ›¸ãæ–¹ - 30æ³ã‹ã‚‰ã®ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°
ES2017ã§ä»•æ§˜ã«å…¥ã£ãŸAsyncFunctionã¨awaitå˜é …æ¼”ç®—åã€‚ ã“ã‚Œã‚‰ã‚’ä½¿ã†ã¨éžåŒæœŸå‡¦ç†ã‚’åŒæœŸçš„ã«æ›¸ãã“ã¨ãŒã§ãã€éžåŒæœŸå‡¦ç†ã®ãƒ«ãƒ¼ãƒ—ã‚‚ã‚·ãƒ³ãƒ—ãƒ«ã«æ›¸ã‘ã‚‹ã‚ˆã†ã«ãªã‚‹ã€‚ ã“ã®è¨˜äº‹ã®å†…å®¹ã¯å…¨ã¦Node.jsã®v8.6.0ã§å‹•ä½œç¢ºèªã—ã¦ã„ã‚‹ã€‚ éžåŒæœŸå‡¦ç†ã®åŸºç¤Žã¯ã“ã¡ã‚‰ã€‚ AsyncFunction é–¢æ•°å®šç¾©ã®å‰ã«asyncã¨ã¤ã‘ã‚‹ã¨ã€ãã®é–¢æ•°ã¯AsyncFunctionã«ãªã‚‹ã€‚ async function myFunc(){ return 'foo'; } console.log(myFunc); // [AsyncFunction: myFunc] console.log(myFunc()); // Promise { 'foo' } myFunc().then(res => console.log(res)); // foo éžåŒæœŸå‡¦ç†ã‚’ã‚·ãƒ³ãƒ—ãƒ«ã«æ›¸ã‘ã¦ã„ã‚‹ã“ã¨ãŒåˆ†ã‹ã‚‹ã€‚ Asy
nantan 2017/10/30
Promise

async

javascript
ãƒªãƒ³ã‚¯
Unable to Test Async Actions in Redux
nantan 2016/10/06
javascript

test

async
ãƒªãƒ³ã‚¯
javascript - Pros/cons of using redux-saga with ES6 generators vs redux-thunk with ES2017 async/await - Stack Overflow
There is a lot of talk about the latest kid in redux town right now, redux-saga/redux-saga. It uses generator functions for listening to/dispatching actions. Before I wrap my head around it, I would like to know the pros/cons of using redux-saga instead of the approach below where I'm using redux-thunk with async/await. A component might look like this, dispatch actions like usual. import { login
nantan 2016/09/06
redux-saga

redux-thunk

async

await
ãƒªãƒ³ã‚¯
ES2015ã®Generatorã€ãŠã‚ˆã³ Async/Await ã‚’ä½¿ã£ãŸéžåŒæœŸå‡¦ç†ã«ã¤ã„ã¦ - Money Forward Developers Blog
ãƒžãƒãƒ¼ãƒ•ã‚©ãƒ¯ãƒ¼ãƒ‰ã§ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰ã®é–‹ç™ºè€…ã‚’ã—ã¦ã„ã¾ã™å¤§å¡”ã¨ç”³ã—ã¾ã™ã€‚ ä»Šå›žã¯å€‹äººçš„ã«ãŠä¸–è©±ã«ãªã‚‹ã“ã¨ã®å¤šã„GeneratorãŠã‚ˆã³ Async/Await ã‚’ä½¿ã£ã¦éžåŒæœŸå‡¦ç†ã‚’ã€åŒæœŸå‡¦ç†ã£ã½ãæ›¸ãæ–¹æ³•ã«ã¤ã„ã¦ã€è¨˜è¼‰ã•ã›ã¦ã„ãŸã ããŸã„ã¨æ€ã„ã¾ã™ã€‚ ç’°å¢ƒæ§‹ç¯‰ webpackã‚„rollupãªã©æ–°ã—ã„ãƒãƒ³ãƒ‰ãƒ©ãƒ¼ãŒå‡ºã¦ãã¦ã„ã¾ã™ãŒã€ä»Šå›žã¯ECMAScriptã®ãƒ“ãƒ«ãƒ‰ã«gulpã‚’ä½¿ã„ã¾ã™ã€‚ã¾ãŸãƒˆãƒ©ãƒ³ã‚¹ãƒ‘ã‚¤ãƒ©ã«ã¯Babelã‚’ç”¨ã„ã¾ã™ã€‚ NodeJS 4.2.1 npm 2.14.7 Google Chrome 49.0.2623.112 (64-bit) ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ ä»Šå›žä½œæˆã—ãŸã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã¯ã™ã¹ã¦ã“ã¡ã‚‰ã‹ã‚‰ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã§ãã¾ã™ã€‚ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã®ãƒ“ãƒ«ãƒ‰æ–¹æ³•ã‚„å‹•ã‹ã—æ–¹ã¯ãŠæ‰‹æ•°ã§ã™ãŒãƒªãƒ³ã‚¯å…ˆã‚’ã”è¦§ãã ã•ã„ã€‚ package.json å¿…è¦ã¨ãªã‚‹ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã‚’è¨˜è¿°ã—ã¾ã™ã€‚ { "name": "blog_sam
nantan 2016/09/05
async

await

generator

ECMAScript

javascript
ãƒªãƒ³ã‚¯
ES2017 async/await + Promise ã§è§£æ±ºã§ãã‚‹äº‹ã€ã¨ES2015(ES6) generators (yield) + Promise + npm aa (async-await) ã§è§£æ±ºã§ãã‚‹äº‹ - Qiita
ES2017 async/await + Promise ã§è§£æ±ºã§ãã‚‹äº‹ã€ã¨ES2015(ES6) generators (yield) + Promise + npm aa (async-await) ã§è§£æ±ºã§ãã‚‹äº‹JavaScriptasynces6es2015es2017 ES2017 async/await + Promise ã§è§£æ±ºã§ãã‚‹äº‹ ES2017 async/await ã¨ Promise ã‚’ä½¿ã†ã¨éžåŒæœŸå‡¦ç†ã‚’ã™ã”ãç°¡å˜ã«å‡¦ç†ã§ãã‚‹ã€‚ ã¨ã¦ã‚‚ä¾¿åˆ©ãªã®ã ãŒã€ãã‚Œã ã‘ã§ã¯ã€ã©ã†ã‚‚æ©Ÿèƒ½ãŒè¶³ã‚Šãªã„æ§˜ã«è¦‹ãˆã‚‹ã€‚ ã“ã®è¨˜äº‹ã¯... TL;DR ES2017 async/await ã‚’ä½¿ã£ã¦ã‚‚ã€ã¾ã ã„ã‚ã„ã‚ã¨èª²é¡Œã¯æ®‹ã£ã¦ã‚‹ã‚ˆã€‚ ES2015 (ES6) generators ã¨ npm aa (async-await) ã ã¨ã€ã‚ˆã‚Šè‰¯ã„è§£æ±ºç–ãŒã‚ã‚‹ã‚ˆã€‚ã£ã¦è©±ã€‚ ä»¥ä¸‹ã®å›³ã®æ§˜ãªéžåŒæœŸå‡¦ç†ãƒ•
nantan 2016/09/05
JavaScript

es6

es2015

async

esnext
ãƒªãƒ³ã‚¯
Asyncã¨Await : ã‚³ãƒ¼ãƒ«ãƒãƒƒã‚¯åœ°ç„ã‚’é¿ã‘ã‚‹ãŸã‚ã®æœ€æ–°ã®ã‚„ã‚Šæ–¹ã€ãã—ã¦ãã®æœªæ¥ | POSTD
(2016/7/7ã€ã„ãŸã ã„ãŸãƒ•ã‚£ãƒ¼ãƒ‰ãƒãƒƒã‚¯ã‚’å…ƒã«è¨˜äº‹ã‚’ä¿®æ£ã„ãŸã—ã¾ã—ãŸã€‚) JavaScriptã€ç‰¹ã«Node.jsã¨ã„ãˆã°ã€ ã‚³ãƒ¼ãƒ«ãƒãƒƒã‚¯åœ°ç„ ãŒã‚ˆãé€£æƒ³ã•ã‚Œã¾ã™ ^(1) ã€‚ãŸãã•ã‚“ã®éžåŒæœŸI/Oã‚’æ‰±ã†ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ã„ãŸã“ã¨ãŒã‚ã‚‹æ–¹ã«ã¯ã€ãŠãã‚‰ãä»¥ä¸‹ã®ã‚ˆã†ãªãƒ‘ã‚¿ãƒ¼ãƒ³ã¯ãŠãªã˜ã¿ã§ã—ã‚‡ã†ã€‚ export default function getLikes () { getUsers((err, users) => { if (err) return fn(err); filterUsersWithFriends((err, usersWithFriends) => { if (err) return fn(err); getUsersLikes(usersWithFriends, (err, likes) => { if (err) return fn (err); fn(null, lik
nantan 2016/07/06
javascript

async

await
ãƒªãƒ³ã‚¯
asyncé–¢æ•°ãŒå®Ÿè£…ã•ã‚ŒãŸ - JS.next
æ¦‚è¦ éžåŒæœŸãªå‡¦ç†ã‚’åŒæœŸçš„ã«æ›¸ã‘ã‚‹é–¢æ•°ã‚¿ã‚¤ãƒ—ãŒå®Ÿè£…ã•ã‚ŒãŸã€‚ åŸºæœ¬ ã€Œasyncã€ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã«ç¶šã‘ã¦é–¢æ•°å®šç¾©ã‚’æ›¸ãã¨ã€asyncé–¢æ•°ã¨ãªã‚‹ã€‚ async function afn1() { } afn2 = async () => { } obj = { async afn3() { } } asyncé–¢æ•°ã‚’å‘¼ã³å‡ºã™ã¨ãƒ—ãƒãƒŸã‚¹ãŒè¿”ã•ã‚Œã‚‹ã€‚ console.log( afn1() ) // <Promise> ã“ã®ãƒ—ãƒãƒŸã‚¹ã¯ã€asyncé–¢æ•°ãŒçµ‚äº†ã™ã‚‹ã¨ãã®è¿”ã‚Šå€¤ã§è§£æ±ºã•ã‚Œã€ä¾‹å¤–ãŒèµ·ã“ã‚‹ã¨æ£„å´ã•ã‚Œã‚‹ã€‚ async function afn4( flag ) { if ( flag ) return 'Yes' else throw 'No' } afn4( true ).then( v => console.log( v ) ) /// "Yes" afn4( false ).catch( v
nantan 2016/05/20
async

javascript
ãƒªãƒ³ã‚¯
HTML5ã®scriptè¦ç´ ã§async, deferã‚’ä½¿ã£ã¦ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚¢ãƒƒãƒ— - IT-Walker on hatena
http://code.google.com/speed/articles/html5-performance.html JavaScriptã®é«˜é€ŸåŒ–æ‰‹æ³•ã‚’ç´¹ä»‹ã™ã‚‹ã€Googleã®ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã€Œspeedã€ãŒãƒªãƒ‹ãƒ¥ãƒ¼ã‚¢ãƒ«ã—ãŸã¨è¨€ã†ã®ã§è¦‹ã¦ãŸã‚‰ã€ã€ŒHTML5ã§ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚¢ãƒƒãƒ—ã€ã¦ãªã‚¿ã‚¤ãƒˆãƒ«ãŒã‚ã£ãŸã®ã§ã€Œãªã¬ï¼Ÿã€ã¨æ€ã£ã¦èªã‚“ã§ã¿ã¾ã—ãŸã€‚ HTML5ä½¿ã£ã¦ã‚‚ãã‚“ãªåŠ¹åŠ›å¾—ã‚‰ã‚Œãªã„ã ã‚ã†ãƒ»ãƒ»ãƒ»ã¨æ€ã£ã¦èªã‚“ã§ã¿ãŸã‚‰ã€ã€ŒHTML5ã®è¨˜æ³•ã‚’ä½¿ãˆã°nãƒã‚¤ãƒˆç¯€ç´„ã€ã¿ãŸã„ãªãƒãƒ§ã‚³ã‚¶ã‚¤ãªæ‰‹æ³•ãŒä¸»ã ã£ãŸã®ã§ã¡ã‚‡ã£ã¨è‹¦ç¬‘(^^; ã¨ã¯ã„ãˆã€scriptè¦ç´ ã«ä»Šåº¦ã‹ã‚‰åŠ ã‚ã‚‹asyncå±žæ€§ã«ã¤ã„ã¦ç‰ã¯ã€æ—¥æœ¬èªžã§èª¬æ˜Žã•ã‚Œã¦ã„ã‚‹è¨˜äº‹ãŒã»ã¨ã‚“ã©ãªã„ã®ã§ã€å…¨ä½“çš„ã«è¦ç´„ã—ã¦ãŠãã¾ã™ï¼ˆã‚ãã¾ã§ç¿»è¨³ã§ã¯ãªãã¦è¦ç´„ã€‚æ™‚é–“ãŒãªã„ã®ã§è¶…é©å½“ã§ã™ã€‚æ£ç¢ºãªã¨ã“ã‚ã¯åŽŸæ–‡ã‚’èªã‚“ã§ãã ã•ã„ï¼‰ã€‚ DTD HTML4ã¾ã§ã¯ä»¥ä¸‹ã®ã‚ˆã†ã«æ›¸ã‹ãªãã‚ƒã„ã‘ãª
nantan 2015/04/30
script

async

html5
ãƒªãƒ³ã‚¯
éžåŒæœŸå‡¦ç†ã®åŸºç¤Ž
4. Threadã‚ˆã‚Šã‚‚Task for (int i = 0; i < num; i++) { var t = new Thread(_ => b[i] = F(a[i]) ); } for (int i = 0; i < num; i++) { Task.Run(() => b[i] = F(a[i]) ); } Ã—æ‚ªã„ä¾‹ â—‹è‰¯ã„(ã¾ã ãƒžã‚·â€»ãª)ä¾‹ ãƒ‡ãƒ¼ã‚¿ã®æ•°ã ã‘ ã‚¹ãƒ¬ãƒƒãƒ‰ä½œæˆ Threadã§ãªã Taskåˆ©ç”¨ â€» ã“ã®å ´åˆã€Parallelã‚¯ãƒ©ã‚¹ã‚„Parallel.Enumerableã‚¯ãƒ©ã‚¹ãŒä½¿ã„ã‚„ã™ã„ 5. Threadã‚ˆã‚Šã‚‚Task for (int i = 0; i < num; i++) { var t = new Thread(_ => b[i] = F(a[i]) ); } for (int i = 0; i < num; i++) { Task.Run(() => b[
nantan 2014/05/16
ã‚¹ãƒ¬ãƒƒãƒ‰

async

c#
ãƒªãƒ³ã‚¯
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