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the router is that 'thing' that parses the url and based on that assembles your application
#javascript #routing #angular2 #ng2router
let obj = { oddType: +this.match[`CompetitorsType${this.odd}`] || 'X' }
// +this.. coerces to number, otherwise 'X',
#javascript #es2015
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"no component should be allowed to mutate any data that it doesn't own" - @teropa
for the third time.
#javascript #componentarchitecture
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the key thing about declarative knowledge is it says that something is true, but doesn't tell you how to do it
#computerscience #javascript
a #decorator is just a #function that 'decorates' a target for example, another function or class
#javascript #typescript #angular2
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Аневризма retweeted
Want to learn more about WebAssembly? I've got you covered:
medium.com/javascript-scene/…
medium.com/javascript-scene/… #wasm #JavaScript
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migrating from #angularjs to #angular2 is easy if you don't depend on external libraries, otherwise you going to suffer!!!
#javascript
#javascript Functions can use objects to remember results of previous operations, making it possible to avoid unnecessary work - memoization
#javascript #es2015 import creates #immutable bindings
export let c = 0
export () => c += 1
///
import {c} from './c'
c += 1 //SyntaxError
const f = tweet => {
let newTweet = tweet;
newTweet.id = blabla; //BUG! mutating both tweet and newTweet
};
#javascript #mutate is wrong
angular1.6, typescript2 and webpack2 project starter
github.com/vsternbach/angula…
#javascript #typescript #webpack
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#javascript you can't destructure
let {getFullYear} = new Date()
getFullYear() //Uncaught TypeError
getFullYear.call(new Date) //2017
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A callback is a function passed as a parameter to another function that performs an asynchronous operation.
#javascript #asyncishard
"Lambda calculus is all about function composition"
#javascript #functions #functionalprogramming #reactjs #react #es2017
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