rauschma

Strings

String.prototype.*

None of the string methods modify this – they always return fresh strings.

• charAt(pos: number): string ^ES1

  Returns the character at index pos, as a string (JavaScript does not have a datatype for characters). str[i] is equivalent to str.charAt(i) and more concise (caveat: may not work on old engines).

ebidel

Moved to https://github.com/ebidel/puppeteer-examples

bvaughn

// This is an example of how to fetch external data in response to updated props,
// If you are using an async mechanism that does not support cancellation (e.g. a Promise).

class ExampleComponent extends React.Component {
  _currentId = null;

  state = {
    externalData: null
  };

rauschma

/*:::::::::: copySync(src, dest, [options]) ::::::::::*/
/* https://github.com/jprichardson/node-fs-extra/blob/master/docs/copy-sync.md */

let optBoolToJS = (optBool: option(bool)) =>
  switch (optBool) {
  | None => None
  | Some(b) => Some(Js.Boolean.to_js_boolean(b));
  };

type copyOpts;

yelouafi

In this tutorial we're going to build a set of parser combinators.

What is a parser combinator?

We'll answer the above question in 2 steps.

1. What is a parser?
2. and, what is a parser combinator?

So first question: What is parser?

jaredly

let recv = (client, maxlen) => {
  let bytes = Bytes.create(maxlen);
  let len = Unix.recv(client, bytes, 0, maxlen, []);
  Bytes.sub_string(bytes, 0, len)
};

let parse_top = top => {
  let parts = Str.split(Str.regexp("[ \t]+"), top);
  switch (parts) {

vjeux

I'm taking down this post. I just posted this as a side comment to explain a sentence on my latest blog post. This wasn't meant to be #1 on HN to start a huge war on functional programming... The thoughts are not well formed enough to have a huge audience. Sorry for all the people reading this. And please, don't dig through the history...

jlongster

import React from 'react';
import lively from 'lively';

// Global registry and resize handler

let _registeredInstances = [];
function register(inst) {
  if (_registeredInstances.length === 0) {
    window.addEventListener('resize', onResize);
  }

timvisee

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

• There are always 24 hours in a day.
• February is always 28 days long.
• Any 24-hour period will always begin and end in the same day (or week, or month).

WolfDan

/* Source from: https://github.com/Astrocoders/reform I edited it to handle the onChange events and validation */
type action =
  | HandleChange((string, string))
  | HandleSubmit;

type validation =
  | Required
  | MinLength(int)
  | MaxLength(int)
  | Between(int, int)