mhofman

const KEYS = 1;
const VALUES = 2;
const KEYS_VALUES = 3;

export default class WeakValueMap {
  #map = new Map();
  #group = new FinalizationGroup((iterator) => {
    for (const key of iterator) {
      this.#map.delete(key);
    }

acdlite

Demo: Coordinating async React with non-React views

tl;dr I built a demo illustrating what it might look like to add async rendering to Facebook's commenting interface, while ensuring it appears on the screen simultaneous to the server-rendered story.

A key benefit of async rendering is that large updates don't block the main thread; instead, the work is spread out and performed during idle periods using cooperative scheduling.

But once you make something async, you introduce the possibility that things may appear on the screen at separate times. Especially when you're dealing with multiple UI frameworks, as is often the case at Facebook.

How do we solve this with React?

hungps

import android.webkit.CookieManager;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import okhttp3.Cookie;
import okhttp3.CookieJar;
import okhttp3.HttpUrl;

emenoh

"use strict";

const Nightmare = require('nightmare');
const url = "http://www.apple.com";
//just an example
const path = "./testfile.png";
//we'll save the screenshot in the same directory
const userAgent = "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10A5376e";
//make sure we load the mobile version

sarink

// Forked/modified from: https://gist.github.com/maxbrunsfeld/1542120
// This method gives you an easier way of calling super when you're using Backbone in plain javascript.
// It lets you avoid writing the constructor's name multiple times.
// You still have to specify the name of the method.
//
// So, instead of having to write:
//
//    var Animal = Backbone.Model.extend({
//        word: "",
//        say: function() {

kangax

RegExp.escape(string)

Computes a new version of a String value in which certain characters have been escaped, so that the regular expression engine will interpret any metacharacters that it may contain as character literals.

When the escape function is called with one argument string, the following steps are taken:

1. Let string be ToString(string).
2. ReturnIfAbrupt(string).
3. Let length be the number of characters in string.
4. Let R be the empty string.