retronym

// scala 2.7 simple type constraint. This can only constrain a type parameter of this function.
// Below, in ListW.sumint28, we can't use this approach because we want to constrain T, 
// a type param of the enclosing trait.
def sumint27A[T <: Int](l: List[T]) : Int = l.reduceLeft((a: Int, b: Int) => a + b)

trait IntLike[X] extends (X => Int)
object IntLike {
  implicit val intIntLike: IntLike[Int] = new IntLike[Int] { def apply(x: Int) = identity(x) }
}

penguinboy

var flattenObject = function(ob) {
	var toReturn = {};
	
	for (var i in ob) {
		if (!ob.hasOwnProperty(i)) continue;
		
		if ((typeof ob[i]) == 'object') {
			var flatObject = flattenObject(ob[i]);
			for (var x in flatObject) {
				if (!flatObject.hasOwnProperty(x)) continue;

henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

viktorklang

/*
Copyright 2012-2021 Viktor Klang

   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

shakefu

# Option defaults
OPT="value"

# getopts string
# This string needs to be updated with the single character options (e.g. -f)
opts="fvo:"

# Gets the command name without path
cmd(){ echo `basename $0`; }

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

ayosec

Test with

$ sbt run

And then,

$ curl localhost:8080/mars/hi

$ curl localhost:8080/jupiter/hi

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

ngryman

intellij javascript live templates

Just a dump of handy live templates I use with IntelliJ. They should also work with WebStorm.

How to

• Go to settings.
• Search for live templates.
• Under the javascript section you should be able to manage your templates.