| var context = new AudioContext(), | |
| gainNode = context.createGain(), | |
| oscillator = context.createOscillator(); | |
| gainNode.connect(context.destination); | |
| oscillator.frequency.value = 440; | |
| oscillator.connect(gainNode); | |
| oscillator.start(); | |
| // .. | |
| // gainNode.gain.value = 0; |
| |-------------------------|-------------------------|-------------------------|-------------------------| | |
| |-------------------------|-------------------------|-------------------------|-------------------------| | |
| |----7--------8--6--7--10-|----------8-----10-8-----|----7--8--7-----------7--|-------------------------| | |
| |-8-----10-9--------------|-------------------------|-------------10-7--8-----|-10----8--7-----------8--| | |
| |-------------------------|-------------------------|-------------------------|----10-------------------| | |
| |-------------------------|-------------------------|-------------------------|-------------------------| | |
| | + - + - + - + - | + - + - + - + - | + - + - + - + - | + - + - + - + - | | |
| |-------------------------|-------------------------|-------------------------|-------------------------| | |
| |-------------------------|-------------------------|----------------9-----7--|-8-----------------------| |
| // Take "3mm", "-3inches", or "3.45 cm" and return ['3', 'mm'], ['-3', 'inches'], ["3.45", "cm"] etc | |
| function unitParse (str) { | |
| return (str.match(/([-\d.]+)\s+?([A-Za-z]+)/) || []).slice(1) | |
| } |
| function Line (slope, intercept) { | |
| this.slope = slope | |
| this.intercept = intercept | |
| } | |
| function getX (y) { | |
| y = y || 0 | |
| return (y - this.intercept) / this.slope | |
| } | |
| Line.prototype.getX = getX; |
| const cons = (a, b) => | |
| (member) => { | |
| if (member === 1) { | |
| return a | |
| } else if (member === 2) { | |
| return b | |
| } | |
| } | |
| const car = (pair) => |
| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Scratch pad</title> | |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/mocha/2.2.5/mocha.min.css" /> | |
| </head> | |
| <body> | |
| <div id="mocha"></div> | |
| <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/chai/3.2.0/chai.min.js"></script> |
| (1..10e6).map { | |
| SecureRandom.uuid | |
| }.reduce(Hash.new(0)) { |counts, uuid| | |
| counts[uuid] += 1 | |
| counts | |
| }.values.uniq |
Rough outline of the steps in an isolated design job
| const { keys, assign } = Object | |
| const concern = { | |
| doSideEffectyThing () { | |
| this.property1 = 'Hip, hip!' | |
| } | |
| } | |
| const instance = { | |
| someProp: 'Foo', |
| const range = (start, end) => | |
| Array.from({ | |
| length: end - start | |
| }).map((_, index) => (index + start)) | |
| const sum = nums => | |
| nums.reduce((total, num) => total + num) | |
| sum(range(20, 100)) |