aseemk

CoffeeScript 1.7 is shaping up to be a pretty kick-ass release with significant improvements. Here are the ones I'm most excited about, in order of my own excitement.

Parentheses-free chaining

jashkenas/coffeescript#3263

Years of being wished for, finally granted!

lazd

Potential names:

• ✅ domly - like Dolly the sheep, DOMly uses cloneNode and createElement to be fast (via Aysegul Yonet). 🐑
• dolly - like Dolly the sheep, the language clones HTML" (via Aysegul Yonet)
• doml - dom language
• domtl - dom template language
• domtml - dom template markup language
• tmul - "template mark-up language" (via Parag Tope)
  • Also stands for "The Milwaukee Urban League" and a problem code from SPOJ
• templet - "root word of template, petite version of template" (via Parag Tope)

samgiles

// [B](f: (A) ⇒ [B]): [B]  ; Although the types in the arrays aren't strict (:
Array.prototype.flatMap = function(lambda) { 
    return Array.prototype.concat.apply([], this.map(lambda)); 
};

nk9

#!/usr/bin/python
# -*- coding: utf-8 -*-

# Python script to find the largest files in a git repository.
# The general method is based on the script in this blog post:
# http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
#
# The above script worked for me, but was very slow on my 11GB repository. This version has a bunch
# of changes to speed things up to a more reasonable time. It takes less than a minute on repos with 250K objects.
#

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

AndrewIngram

import React from 'react';
import shallowEqual from 'react/lib/shallowEqual';

class PureRenderComponent extends React.Component {
  shouldComponentUpdate(nextProps, nextState) {
    return !shallowEqual(this.props, nextProps) || !shallowEqual(this.state, nextState);
  }
}

finscn

# NewFileAtCurrentFolder

import sublime_plugin
import os.path

class NewFileListener(sublime_plugin.EventListener):
    def on_new_async(self, view):
        if not view.window().active_view():
            print("NF: no view")
            return

watson

The standard code style linter is a great tool by Feross - check it out!

Remove trailing semicolons:

find . -path ./node_modules -prune -o -type f -name '*.js' -exec sed -i '' -e 's/;$//' {} \;

Ensure space between function and opening bracket:

apaatsio

console.log('Loading function');

var doc = require('dynamodb-doc');
var dynamo = new doc.DynamoDB();

/**
 * Provide an event that contains the following keys:
 *
 *   - operation: one of the operations in the switch statement below
 *   - tableName: required for operations that interact with DynamoDB

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?