Even with async/await, raw promises are still key to writing optimal concurrent javascript
Even with async/await, raw promises are still key to writing optimal concurrent javascript With es2017, async/await is just around the corner. In a previous article I recommended getting fully to grips with promises, since they’re the foundation that async/await is built on. Understanding promises helps understand the concepts at the foundation of async/await, and help you write better async funct
Async iterators and generators
Streaming fetches are supported in Chrome, Edge, and Safari, and they look a little like this: async function getResponseSize(url) { const response = await fetch(url); const reader = response.body.getReader(); let total = 0; while (true) { const {done, value} = await reader.read(); if (done) return total; total += value.length; } } This code is pretty readable thanks to async functions (here's a t
Asyncing Feeling about JavaScript Generators - Big Nerd Ranch
Want the TL;DR version? Here’s a gist of all three examples. Async generators and async iteration have arrived! Err, they’ve reached Stage 3, which means they are likely to ship in a future version of JavaScript. Until then, you can enable Stage 3 proposals in Babel to try them out in your own projects. The web is essentially a decentralized app runtime, so subpar language additions have permanent
Taming the asynchronous beast with ES7
One of the trickiest aspects of PouchDB is that its API is asynchronous. I see no shortage of confused questions on Stack Overflow, Github, and IRC, and most often they stem from a misunderstanding of callbacks and promises. We can't really help it. PouchDB is an abstraction over IndexedDB, WebSQL, LevelDB (in Node), and CouchDB (via Ajax). All of those APIs are asynchronous; hence PouchDB must be
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Cory House on Twitter: "Tip: With async/await, you can run multiple async operations in parallel. How? Put the await statements on the same… https://t.co/ewRwzVKMwv"
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