tomchen

//ES6 class vs ES5 constructor function

// ES6 class

class MyClass {
	// is executed upon instantiation, not to be used as a normal method

	// proposal class properties
	// https://babeljs.io/docs/en/babel-plugin-proposal-class-properties
	// https://github.com/tc39/proposal-class-fields

tomchen

Keybase proof

I hereby claim:

• I am tomchen on github.
• I am tomchenorg (https://keybase.io/tomchenorg) on keybase.
• I have a public key whose fingerprint is C258 C4AF ECBC 1C27 A1F4 6CD5 3E37 9127 BF71 FD68

To claim this, I am signing this object:

tomchen

/*

Below is the result for the method 'set' of Map/Object/Array, when both keys and values are from 0 to 9999.
Method 'set' of Map x 3,983 ops/sec ±0.21% (94 runs sampled)
Method 'set' of Object x 6,265 ops/sec ±0.31% (96 runs sampled)
Method 'set' of Array x 35,736 ops/sec ±0.37% (93 runs sampled)
Fastest is Method 'set' of Array
Below is the result for the method 'has' (or similar) of Map/Object/Array, when both keys and values are from 0 to 9999.
Method 'has' of Map x 6,244 ops/sec ±1.33% (94 runs sampled)
Method 'in' of Object x 63,996 ops/sec ±0.27% (95 runs sampled)

tomchen

C Data Types

Type	Explanation	Minimum size (bytes)	Minimum range	Format specifier
char	Smallest addressable unit of the mach

tomchen

const makeQueryablePromise = (promise) => {
  if (promise.isFulfilled) {
    return promise
  }

  let isPending = true
  let isRejected = false
  let isFulfilled = false

  const result = promise.then(

tomchen

(function (root, factory) {
  if (typeof define === "function" && define.amd) {
    // AMD
    define([], factory);
  } else if (typeof module === "object" && module.exports) {
    // Node
    module.exports = factory();
  } else {
    // Browsers
    root.logdf5e4y = factory();