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@yelouafi
yelouafi / algebraic-effects-series-1.md
Last active February 24, 2024 16:03
Operational Introduction to Algebraic Effects and Continuations
View algebraic-effects-series-1.md

Algebraic Effects in JavaScript part 1 - continuations and control transfer

This is the first post of a series about Algebraic Effects and Handlers.

There are 2 ways to approach this topic:

  • Denotational: explain Algebraic Effects in terms of their meaning in mathematics/Category theory
  • Operational: explain the mechanic of Algebraic Effects by showing how they operate under a chosen runtime environment

Both approaches are valuables and give different insights on the topic. However, not everyone (including me), has the prerequisites to grasp the concepts of Category theory and Abstract Algebra. On the other hand, the operational approach is accessible to a much wider audience of programmers even if it doesn't provide the full picture.

@sebmarkbage
sebmarkbage / Infrastructure.js
Last active January 15, 2024 09:28
SynchronousAsync.js
View Infrastructure.js
let cache = new Map();
let pending = new Map();
function fetchTextSync(url) {
if (cache.has(url)) {
return cache.get(url);
}
if (pending.has(url)) {
throw pending.get(url);
}
@sebmarkbage
sebmarkbage / asyncToReact.js
Last active March 31, 2023 15:57
Convert Async Function to React Component
View asyncToReact.js
function asyncToReact(fn) {
class PromiseComponent extends React.Component {
state = { waiting: true, result: null };
componentDidMount() {
fn(...this.props.args).then(result => this.setState({ waiting: false, result }));
}
componentDidUpdate() {
fn(...this.props.args).then(result => this.setState({ waiting: false, result }));
}
shouldComponentUpdate(newProps) {
View types.markdown

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

@Avaq
Avaq / combinators.js
Last active February 18, 2024 21:12
Common combinators in JavaScript
View combinators.js
const I = x => x
const K = x => y => x
const A = f => x => f (x)
const T = x => f => f (x)
const W = f => x => f (x) (x)
const C = f => y => x => f (x) (y)
const B = f => g => x => f (g (x))
const S = f => g => x => f (x) (g (x))
const S_ = f => g => x => f (g (x)) (x)
const S2 = f => g => h => x => f (g (x)) (h (x))
@mbleigh
mbleigh / Gemfile
Created March 21, 2012 03:14
Non-Rails Rackup with Sprockets, Compass, Handlebars, Coffeescript, and Twitter Bootstrap
View Gemfile
source "https://rubygems.org"
gem 'sprockets'
gem 'sprockets-sass'
gem 'sass'
gem 'compass'
gem 'bootstrap-sass'
gem 'handlebars_assets'
gem 'coffee-script'
@fnichol
fnichol / README.md
Created February 26, 2012 01:23
A Common .ruby-version File For Ruby Projects
View README.md

A Common .ruby-version File For Ruby Projects

Background

I've been using this technique in most of my Ruby projects lately where Ruby versions are required:

  • Create .rbenv-version containing the target Ruby using a definition name defined in ruby-build (example below). These strings are a proper subset of RVM Ruby string names so far...
  • Create .rvmrc (with rvm --create --rvmrc "1.9.3@myapp") and edit the environment_id= line to fetch the Ruby version from .rbenv-version (example below).

Today I learned about another Ruby manager, rbfu, where the author is using a similar technique with .rbfu-version.

@jed
jed / LICENSE.txt
Created November 28, 2011 15:47 — forked from 140bytes/LICENSE.txt
turn the `new` keyword into a function
View LICENSE.txt
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2011 Jed Schmidt <http://jed.is>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE