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function* generatorFunction() { yield "This is the first return  and distributed execution across standard web browsers and Node.js servers. Low- When an executing co-generator pauses with a yield, the returned value is  23 Apr 2018 That's not a co-incidence. async/await can follows a similar strategy and replaces the yield with await in cases where promises are involved. based flow-control goodness for nodejs (supports thunks, promises, etc) - tj/co. co(function* () { var result = yield Promise.resolve(true); return result; }  19 Apr 2017 This function is responsible for “yield”-ing control of its execution And there's a very popular library called co (as in coroutines) that will do it for you. If you want to support semi-modern browsers or Node 6 May 2014 Many Node developers (including myself!) are excited and intrigued about Generators also have a built-in communication channel with yield: to exist) and popularized by frameworks like co and various promise librarie 官方说：The ultimate generator based flow-control goodness for nodejs 置为 成功状态if (ret.done) return resolve(ret.value); // 把yield的值转换成promise  15 Oct 2016 The value property in this object is the value next to the yield The co library is a Node.js generator-based library for managing flow control. Coroutines are computer program components that generalize subroutines for non-preemptive Any subroutine can be translated to a coroutine which does not call yield.

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ava. 9.4 8.1 L4 JavaScript 🚀 Futuristic JavaScript test runner. AVA. 0.5 0.0 JavaScript AVA task for Start * Code Quality Rankings and insights are calculated and If you want to use generator-based coroutines (like with co module or Bluebirds's coroutine) then the situation is a little bit different - any coroutine just returns a promise and what you yield from a generator is actually a promise that you want resolved and injected in the next run of the generator, but it doesn't seem to be the case here. Keyword yield digunakan untuk menghentikan sementara dan melanjutkan sebuah fungsi generator (function* atau legacy generator function). Syntax [rv] = yield [expression];expression Mendefeniskan nilai yang akan dikembalikan melalui iterator protocol.Apabila diabaikan, maka undefined akan dikembalikan.

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Registration: https://yieldnodes.org/register Website: https://yieldnodes.org/ E-mail: support@yieldnodes.org Follow us! It's free: YouTube: https://bit.ly/3 Generators vs Fibers. Both ES6 generators and node-fibers can be used to block a coroutine while waiting on some I/O without blocking the entire process..

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ava. 9.4 8.1 L4 JavaScript 🚀 Futuristic JavaScript test runner. AVA. 0.5 0.0 JavaScript AVA task for Start * Code Quality Rankings and insights are calculated and If you want to use generator-based coroutines (like with co module or Bluebirds's coroutine) then the situation is a little bit different - any coroutine just returns a promise and what you yield from a generator is actually a promise that you want resolved and injected in the next run of the generator, but it doesn't seem to be the case here. Keyword yield digunakan untuk menghentikan sementara dan melanjutkan sebuah fungsi generator (function* atau legacy generator function).

function* generatorFunction() { yield "This is the first return  and distributed execution across standard web browsers and Node.js servers. Low- When an executing co-generator pauses with a yield, the returned value is  23 Apr 2018 That's not a co-incidence.
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它可以被认为是一个基于生成器的版本的return关键字。. yield关键字实际返回一个IteratorResult（迭代器）对象，它有两个属性，value和done，分别代表返回值和是否完成。. yield无法单独工作，需要配合generator (生成器)的其他函数，如next，懒汉式操作，展现强大的 co ( function * () { var a = size ('.gitignore' ); var b = size ('index.js' ); var c = size ('Makefile' ); var res = yield [a, b, c]; console.log (res); // => [ 13, 1687, 129 ] }) () object.

Today we will check our current results, last news of the Yield Nodes system and additionally guys I will show you our Bitcoin wallet because we got our withdrawal payment in 20,000 EUR! var co = require('./co'); // wrap the function to thunk function readFile(filename) { return function(callback) { require('fs').readFile(filename, 'utf8', callback); }; } co(function * { var file1 = yield readFile('./file/a.txt'); var file2 = yield readFile('./file/b.txt'); console.log(file1); console.log(file2); return 'done'; })(function(err, result) { console.log(result) }); co. wrap (function * (libTplPath, localTplPath) { let tpl try { yield thenFs.stat(localTplPath) tpl = yield thenFs.readFile(localTplPath, 'utf-8') } catch (e) { tpl = yield thenFs.readFile(libTplPath, 'utf-8') yield thenFs.writeFile(localTplPath, tpl) } return tpl }) Nodejs có module co và framework koa (được xem là next generator framework for nodejs) tận dụng rất tốt chức năng này. yield còn dùng để khử callback phức tạp của Javascript, khử promise - hiện còn làm nhiều bạn lúng túng khi mới bắt đầu với nodejs.
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