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

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:

justinmc

###
    The main requirejs file
###

require.config

    paths:
        "jquery": "vendor/jquery.min"
        "underscore": "vendor/lodash.min"
        "backbone": "vendor/backbone-min"

shshaw

(function($){
    var addClass = $.fn.addClass;
    $.fn.addClass = function(value) {
      var orig = addClass.apply(this, arguments);
      
      var elem,
        i = 0,
        len = this.length;
      
      for (; i < len; i++ ) {

justinmc

(function($){

  /* addClass shim
   ****************************************************/
  var addClass = $.fn.addClass;
  $.fn.addClass = function(value) {
    var orig = addClass.apply(this, arguments);
 
    var elem,
      i = 0,

justinmc

var gulp = require('gulp');

var clean = require('gulp-clean');
var jshint = require('gulp-jshint');
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var imagemin = require('gulp-imagemin');

var bases = {
 app: 'app/',

justinmc

/* border-serrated - a zig zag triangle border with linear gradient
*/
@mixin border-top-serrated($size, $color-outer) {
    & {
        position: relative;
        overflow: auto;
        padding-top: $size;
    }  
    &:before {
        top: 0px;

justindujardin

/*
   border-serrated - a zig zag triangle border with linear gradient
   original SASS version: https://gist.github.com/justinmc/9837998
*/
.border-top-serrated(@size, @colorOuter) {
    & {
        position: relative;
        padding-top: @size;
    }
    &:before {

justinmc

/**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Anchor Smooth Scroll - Smooth scroll to the given anchor on click
*   adapted from this stackoverflow answer: http://stackoverflow.com/a/21918502/257494
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
angular.module('yourapp').directive('anchorSmoothScroll', function($location) {
    'use strict';

    return {
        restrict: 'A',
        replace: false,

hlissner

# ag <https://github.com/ggreer/the_silver_searcher>
# usage: ag-replace.sh [search] [replace]
# caveats: will choke if either arguments contain a forward slash
# notes: will back up changed files to *.bak files

ag -0 -l $1 | xargs -0 perl -pi.bak -e "s/$1/$2/g"

# or if you prefer sed's regex syntax:

ag -0 -l $1 | xargs -0 sed -ri.bak -e "s/$1/$2/g"