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(defn postfix [& e]
(reduce #(if (fn? %2)
(let [[l r & m] %]
(cons (%2 r l) m))
(cons %2 %)) [] e))
@igstan
igstan / option.js
Last active December 18, 2015 05:49
// `unit` is `return` from Haskell
// `bind` is `>>=` from Haskell, or `flatMap` from Scala
var None = {
bind: function (fn) { return this; },
unit: function (v) { return Option(v); },
getOrElse: function (elseValue) { return elseValue; }
};
var Some = function (value) {
@staltz
staltz / introrx.md
Last active July 7, 2025 10:24
The introduction to Reactive Programming you've been missing
@lygaret
lygaret / index.js
Last active July 3, 2025 09:26
ES6 Quasi-Literal for JSX
define(function(require) {
var React = require('react');
var paramRegex = /__(\d)+/;
var parser = new DOMParser();
var errorDoc = parser.parseFromString('INVALID', 'text/xml');
var errorNs = errorDoc.getElementsByTagName("parsererror")[0].namespaceURI;
// turns the array of string parts into a DOM
// throws if the result is an invalid XML document.
@paf31
paf31 / 24days.md
Last active August 8, 2023 05:53
24 Days of PureScript

This blog post series has moved here.

You might also be interested in the 2016 version.

@ericelliott
ericelliott / fp-lingo.md
Last active February 2, 2023 23:33
A Guide to Functional Programming Lingo for JavaScripters

A Guide to Functional Programming Lingo for JavaScripters

Functional programming gets a bad wrap about being too hard for mere mortals to comprehend. This is nonsense. The concepts are actually quite simple to grasp.

The jargon is the hardest part. A lot of that vocabulary comes from a specialized field of mathematical study called category theory (with a liberal sprinkling of type theory and abstract algebra). This sounds a lot scarier than it is. You can do this!

All examples using ES6 syntax. wrap (foo) => bar means:

function wrap (foo) {
@staltz
staltz / index.ios.js
Created April 7, 2015 06:43
Experiment with Cycle.js and React Native
'use strict';
var React = require('react-native');
var Cycle = require('cyclejs');
var {Rx, h} = Cycle;
var createExperimentalIOSRenderer = require('./src/ios-renderer.ios.js');
var {StyleSheet, Text, TextInput, View} = React;
var styles = StyleSheet.create({
container: {
@ohanhi
ohanhi / frp.md
Last active May 6, 2024 05:17
Learning FP the hard way: Experiences on the Elm language

Learning FP the hard way: Experiences on the Elm language

by Ossi Hanhinen, @ohanhi

with the support of Futurice 💚.

Licensed under CC BY 4.0.

Editorial note

@xjamundx
xjamundx / blog-webpack-2.md
Last active November 7, 2024 13:10
From Require.js to Webpack - Part 2 (the how)

This is the follow up to a post I wrote recently called From Require.js to Webpack - Party 1 (the why) which was published in my personal blog.

In that post I talked about 3 main reasons for moving from require.js to webpack:

  1. Common JS support
  2. NPM support
  3. a healthy loader/plugin ecosystem.

Here I'll instead talk about some of the technical challenges that we faced during the migration. Despite the clear benefits in developer experience (DX) the setup was fairly difficult and I'd like to cover some of the challanges we faced to make the transition a bit easier.

@gaearon
gaearon / slim-redux.js
Last active December 3, 2024 06:34
Redux without the sanity checks in a single file. Don't use this, use normal Redux. :-)
function mapValues(obj, fn) {
return Object.keys(obj).reduce((result, key) => {
result[key] = fn(obj[key], key);
return result;
}, {});
}
function pick(obj, fn) {
return Object.keys(obj).reduce((result, key) => {
if (fn(obj[key])) {