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@Joris-van-der-Wel
Joris-van-der-Wel / v8-profiler.js
Last active October 27, 2021 04:03
node.js profiling: generate .cpuprofile which can be opened in chrome dev tools (F12)
'use strict';
var profiler = require('v8-profiler');
profiler.startProfiling();
// ...
var cpuProfile = profiler.stopProfiling();
require('fs').writeFileSync(__dirname + '/foo.cpuprofile', JSON.stringify(cpuProfile));
@bryanrsmith
bryanrsmith / fetch-client.js
Last active April 12, 2020 16:21
A thin wrapper library around the fetch API to provide application-wide HTTP client configuration
export class HttpClient {
constructor(defaults) {
this.defaults = defaults;
this.interceptors = [];
this.activeRequestCount = 0;
this.isRequesting = false;
}
addInterceptor(interceptor) {
this.interceptors.push(interceptor);
@mbostock
mbostock / .block
Last active August 4, 2017 12:54
HSL Color Picker
license: gpl-3.0
@chinchang
chinchang / xmlToJson.js
Last active September 7, 2023 02:39
Function to convert XML to JSON
/**
* Changes XML to JSON
* Modified version from here: http://davidwalsh.name/convert-xml-json
* @param {string} xml XML DOM tree
*/
function xmlToJson(xml) {
// Create the return object
var obj = {};
if (xml.nodeType == 1) {
@protrolium
protrolium / ffmpeg.md
Last active April 8, 2025 01:38
ffmpeg guide

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

@chantastic
chantastic / on-jsx.markdown
Last active November 10, 2024 13:39
JSX, a year in

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

@finnp
finnp / nyancat.js
Last active June 10, 2017 17:48
nyancat in canvas
var catHeight = 150 // 150
var catOffset = 200
ctx.fillStyle = '#002E68'
ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height)
// rainbow
var rainbowColors = [
'#FF0000',
@kennwhite
kennwhite / vpn_psk_bingo.md
Last active April 5, 2025 04:55
Most VPN Services are Terrible

Most VPN Services are Terrible

Short version: I strongly do not recommend using any of these providers. You are, of course, free to use whatever you like. My TL;DR advice: Roll your own and use Algo or Streisand. For messaging & voice, use Signal. For increased anonymity, use Tor for desktop (though recognize that doing so may actually put you at greater risk), and Onion Browser for mobile.

This mini-rant came on the heels of an interesting twitter discussion: https://twitter.com/kennwhite/status/591074055018582016

@zxbodya
zxbodya / render-react-with-rxjs.md
Last active November 1, 2021 08:49
React with RxJS, reactive way :)

Observable React elements with RxJS

Note: if you want to skip history behind this, and just looking for final result see: rx-react-container

When I just started using RxJS with React, I was subscribing to observables in componentDidMount and disposing subscriptions at componentWillUnmount.

But, soon I realised that it is not fun to do all that subscriptions(that are just updating property in component state) manually, and written mixin for this...

Later I have rewritten it as "high order component" and added possibility to pass also obsarvers that will receive events from component.

@ghinda
ghinda / object-to-form-data.js
Last active September 17, 2024 05:22
JavaScript Object to FormData, with support for nested objects, arrays and File objects. Includes Angular.js usage.
// takes a {} object and returns a FormData object
var objectToFormData = function(obj, form, namespace) {
var fd = form || new FormData();
var formKey;
for(var property in obj) {
if(obj.hasOwnProperty(property)) {
if(namespace) {