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@jboner
jboner / latency.txt
Last active July 23, 2026 15:23
Latency Numbers Every Programmer Should Know
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
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

@quexer
quexer / jQuery-plugin-authoring.md
Created September 4, 2012 09:42
如何编写 jQuery 插件

创建插件


看来 jQuery 你已经用得很爽了,想学习如何自己编写插件。非常好,这篇文档正适合你。用插件和方法来扩展 jQuery 非常强大,把最聪明的功能封装到插件中可以为你及团队节省大量开发时间。

开始

@lucifr
lucifr / PlainTasks_Tutorial_zhCN.todo
Created September 18, 2012 04:43
PlainTasks 教程中文版
如何使用 PlainTasks:
项目:
☐ 任何以冒号结尾的行都会被作为项目标题
☐ 可以通过缩进在项目中创建新的项目
☐ 项目可以被折叠(利用了编辑器的原生功能)
任务:
可以在任何位置添加普通文本作为笔记或描述;
就是这么简单!
@deekayen
deekayen / 1-1000.txt
Last active May 7, 2026 00:46
1,000 most common US English words
the
of
to
and
a
in
is
it
you
that
@eendeego
eendeego / bindings-cheat-sheet.md
Created November 28, 2012 10:26
Node/V8 bindings cheat sheet
@yyx990803
yyx990803 / frameworks.md
Created December 3, 2012 21:52
国内互联网公司的前端框架简介

百度:Tangram

基本上就是个百度版jQuery,2.0版本使用链式API,更像了。
配套的还有UI库Magic和模版引擎BaiduTemplate(和ejs很像)

腾讯:JX

理念在介绍里面写的很详细,代码清晰,注释丰富,可读性很好,但只有文档没有实例。
比较传统的大块头框架,本质上来说还是一堆工具方法和对象的堆积,提供了很基本的模块化的开发方式,但没有模块间的依赖关系支持。

@iambibhas
iambibhas / scopes.txt
Last active July 8, 2026 14:04
Sublime Text 2: Snippet scopes
Here is a list of scopes to use in Sublime Text 2 snippets -
ActionScript: source.actionscript.2
AppleScript: source.applescript
ASP: source.asp
Batch FIle: source.dosbatch
C#: source.cs
C++: source.c++
Clojure: source.clojure
CoffeeScript: source.coffee
@n1k0
n1k0 / longest-request.md
Last active December 12, 2015 08:29
Find the longest request when loading a given url using CasperJS

Find longest request using CasperJS

This gist is based on this one.

// longest-request.js
var casper = require("casper").create();
var utils = require("utils");
var url = casper.cli.get(0);
var times = [];
@buzzdecafe
buzzdecafe / cons, car, cdr
Last active November 17, 2021 10:11
cons car and cdr implemented as javascript functions. cribbed from SICP http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-14.html#%_thm_2.4then implemented a bunch of functions just for fun.
// clean and pure:
function cons(x, y) {
return function(pick) {
return pick(x, y);
}
}
// does more stuff:
function cons(x, y) {
var fn = function(pick) {