JamieDixon

List comprehensions

To see a working version of the code check out https://codesandbox.io/s/j497w26383 and open the console.

This file demonstrates a very basic List as an applicative functor for the purpose of demonstrating a simple list comprehension.

The idea for this was taken from: https://egghead.io/lessons/javascript-list-comprehensions-with-applicative-functors by https://twitter.com/drboolean

DrBoolean

// Simple example, but the idea holds for more complex objects.


/* 1) Start with OO */

// user.js
class User {
  constructor(firstName, lastName, email) {
    this.firstName = firstName
    this.lastName = lastName

glebec

/**
 * Minimal demo of parser combinators, possibly as a target for recent
 * JS web dev graduates to implement as an exercise.
 *
 * Huge credit to Hutton, Meijer, and Swierstra for their papers
 * on the subject.
 */

class Parser {

QuentinRoy

import { Observable } from 'rxjs';

// Adapted from https://github.com/Reactive-Extensions/rx-node/blob/87589c07be626c32c842bdafa782fca5924e749c/index.js#L52
export default function fromStream(stream, finishEventName = 'end', dataEventName = 'data') {
  stream.pause();

  return new Observable((observer) => {
    function dataHandler(data) {
      observer.next(data);
    }

wayneseymour

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

exallium

data Parser = WebParser | DbParser

class ParseStrategy p where
  parse :: p -> String -> String

instance ParseStrategy Parser where
  parse WebParser s = "code for parsing web stuff goes here"
  parse DbParser s = "code for parsing db stuff goes here"

fromDB = parse DbParser

wesleyegberto

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
         http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
</web-app>

mrosata

import is from './is-util';

/**
 * Either Monad class (from Functional Programming in JavaScript)
 */
class Either {
  constructor(value) {
    this._value = value;
  }
  get value () {

DrBoolean

const daggy = require('daggy')

const compose = (f, g) => x => f(g(x))
const id = x => x
const kleisli_comp = (f, g) => x => f(x).chain(g)

//=============FREE=============
const Free = daggy.taggedSum({Impure: ['x', 'f'], Pure: ['x']})
const {Impure, Pure} = Free

massahud

1. Get node binary (node.exe) from http://nodejs.org/download/
2. Create the folder where node will reside and move node.exe to it
3. Download the last zip version of npm from http://nodejs.org/dist/npm
4. Unpack the zip inside the node folder
5. Download the last tgz version of npm from http://nodejs.org/dist/npm
6. Open the tgz file and unpack only the file bin/npm (without extension) directly on the node folder.
7. Add the the node folder and the packages/bin folder to PATH
8. On a command prompt execute npm install -g npm to update npm to the latest version

Now you can use npm and node from windows cmd or from bash shell like Git Bash of msysgit.