| // 🔥 Node 7.6 has async/await! Here is a quick run down on how async/await works | |
| const axios = require('axios'); // promised based requests - like fetch() | |
| function getCoffee() { | |
| return new Promise(resolve => { | |
| setTimeout(() => resolve('☕'), 2000); // it takes 2 seconds to make coffee | |
| }); | |
| } |
Deploy key is a SSH key set in your repo to grant client read-only (as well as r/w, if you want) access to your repo.
As the name says, its primary function is to be used in the deploy process in replace of username/password, where only read access is needed. Therefore keep the repo safe from the attack, in case the server side is fallen.
- Generate a ssh key
| // Promise.all is good for executing many promises at once | |
| Promise.all([ | |
| promise1, | |
| promise2 | |
| ]); | |
| // Promise.resolve is good for wrapping synchronous code | |
| Promise.resolve().then(function () { | |
| if (somethingIsNotRight()) { | |
| throw new Error("I will be rejected asynchronously!"); |
| /** | |
| * VH and VW units can cause issues on iOS devices: http://caniuse.com/#feat=viewport-units | |
| * | |
| * To overcome this, create media queries that target the width, height, and orientation of iOS devices. | |
| * It isn't optimal, but there is really no other way to solve the problem. In this example, I am fixing | |
| * the height of element `.foo` —which is a full width and height cover image. | |
| * | |
| * iOS Resolution Quick Reference: http://www.iosres.com/ | |
| */ | |
| upstream project { | |
| server 22.22.22.2:3000; | |
| server 22.22.22.3:3000; | |
| server 22.22.22.5:3000; | |
| } | |
| server { | |
| listen 80; | |
| location / { |
| var array = [{},{},{}]; | |
| var copy = _.map(array, _.clone); |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
When hosting our web applications, we often have one public IP
address (i.e., an IP address visible to the outside world)
using which we want to host multiple web apps. For example, one
may wants to host three different web apps respectively for
example1.com, example2.com, and example1.com/images on
the same machine using a single IP address.
How can we do that? Well, the good news is Internet browsers
| // === Arrays | |
| var [a, b] = [1, 2]; | |
| console.log(a, b); | |
| //=> 1 2 | |
| // Use from functions, only select from pattern | |
| var foo = () => [1, 2, 3]; |