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@danielgtaylor
danielgtaylor / gist:0b60c2ed1f069f118562
Last active April 2, 2024 20:18
Moving to ES6 from CoffeeScript

Moving to ES6 from CoffeeScript

I fell in love with CoffeeScript a couple of years ago. Javascript has always seemed something of an interesting curiosity to me and I was happy to see the meteoric rise of Node.js, but coming from a background of Python I really preferred a cleaner syntax.

In any fast moving community it is inevitable that things will change, and so today we see a big shift toward ES6, the new version of Javascript. It incorporates a handful of the nicer features from CoffeeScript and is usable today through tools like Babel. Here are some of my thoughts and issues on moving away from CoffeeScript in favor of ES6.

While reading I suggest keeping open a tab to Babel's learning ES6 page. The examples there are great.

Punctuation

Holy punctuation, Batman! Say goodbye to your whitespace and hello to parenthesis, curly braces, and semicolons again. Even with the advanced ES6 syntax you'll find yourself writing a lot more punctuatio

@ghoseb
ghoseb / factorial.py
Created November 14, 2008 18:58
The evolution of a Python Programmer
#Newbie programmer
def factorial(x):
if x == 0:
return 1
else:
return x * factorial(x - 1)
print factorial(6)
#First year programmer, studied Pascal
@ilfroloff
ilfroloff / ClassA.js
Last active March 4, 2024 09:01
JavaScript Singleton using class
'use strict';
import Singleton from 'Singleton';
class ClassA extends Singleton {
constructor() {
super();
}
singletonMethod1() {
// ...
@paullewis
paullewis / requestIdleCallback.js
Last active February 21, 2024 16:56
Shims rIC in case a browser doesn't support it.
/*!
* Copyright 2015 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@rauschma
rauschma / get_global_object.js
Last active February 13, 2024 14:31
/**
* Returns the global object.
* Works even inside ES6 modules.
*/
function getGlobalObject() {
// Workers don’t have `window`, only `self`
if (typeof self !== 'undefined') {
return self;
}
if (typeof global !== 'undefined') {
@sebmarkbage
sebmarkbage / Enhance.js
Last active January 31, 2024 18:33
Higher-order Components
import { Component } from "React";
export var Enhance = ComposedComponent => class extends Component {
constructor() {
this.state = { data: null };
}
componentDidMount() {
this.setState({ data: 'Hello' });
}
render() {
@developit
developit / *Preact Root Fragment - replaceNode for Preact 11+.md
Last active January 28, 2024 07:04

preact-root-fragment: partial root rendering for Preact

This is a standalone Preact 10+ implementation of the deprecated replaceNode parameter from Preact 10.

It provides a way to render or hydrate a Preact tree using a subset of the children within the parent element passed to render():

<body>
  <div id="root">  ⬅ we pass this to render() as the parent DOM element...
@svagionitis
svagionitis / Create_Iframe_Index_M3U8.bash
Last active January 13, 2024 13:42
Segment an mp4 file to HLS streaming files
#!/bin/bash
# Create an Iframe index from HLS segmented streams
# $1: Filename to be created
# $2: Location of segmented ts files
# Check how many arguments
if [ $# != 2 ]; then
echo "Usage: $0 [Input filename] [Location of segmented streams]"
exit 1;
fi
@davidwebca
davidwebca / gist:e26186b8f4c6795b19c043fffb6f9861
Last active December 18, 2023 15:29
Detect black screen and split with ffmpeg remux
# Splits video to separate scenes files when full black frames are found in the video
# Inspired by https://gist.github.com/achesco/4dc2ebf13378a0a61fc26c7fe01f539e
# Who got inspired by https://stackoverflow.com/a/38205105
#!/bin/bash
file=""
out="./"
dur=0.05
stripaudio=""
@jashkenas
jashkenas / semantic-pedantic.md
Last active November 29, 2023 14:49
Why Semantic Versioning Isn't

Spurred by recent events (https://news.ycombinator.com/item?id=8244700), this is a quick set of jotted-down thoughts about the state of "Semantic" Versioning, and why we should be fighting the good fight against it.

For a long time in the history of software, version numbers indicated the relative progress and change in a given piece of software. A major release (1.x.x) was major, a minor release (x.1.x) was minor, and a patch release was just a small patch. You could evaluate a given piece of software by name + version, and get a feeling for how far away version 2.0.1 was from version 2.8.0.

But Semantic Versioning (henceforth, SemVer), as specified at http://semver.org/, changes this to prioritize a mechanistic understanding of a codebase over a human one. Any "breaking" change to the software must be accompanied with a new major version number. It's alright for robots, but bad for us.

SemVer tries to compress a huge amount of information — the nature of the change, the percentage of users that wil