hereiscasio

## latency.markdown

      
              2 files
            
          
              754 forks
            
          
              51 comments
            
          
              4489 stars
            
          
                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

  
## .gitignore
#.gitignore
# Numerous always-ignore extensions
*.diff
*.err
*.orig
*.log
*.rej
*.swo
*.swp
*.vi

## device.css
.visible-android {
  display:none;
}
.visible-ios {
  display:none;
}
.on-device .visible-android, .on-device .visible-android {
  display:inherit;
}
.device-ios .visible-android {

## better-nodejs-require-paths.md

      
              1 file
            
          
              249 forks
            
          
              183 comments
            
          
              2366 stars
            
          
                branneman
                / better-nodejs-require-paths.md
            
            
              Last active
              October 18, 2024 20:29
            
              
                Better local require() paths for Node.js
              
          
    Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:
const Article = require('../../../../app/models/article');
Those suck for maintenance and they're ugly.
Possible solutions


## introrx.md

      
              7 files
            
          
              2513 forks
            
          
              472 comments
            
          
              21968 stars
            
          
                staltz
                / introrx.md
            
            
              Last active
              October 17, 2024 14:12
            
              
                The introduction to Reactive Programming you've been missing
              
          
    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.


## delete-databases.js
// Credit to @steobrien from https://gist.github.com/rmehner/b9a41d9f659c9b1c3340#gistcomment-2940034
// for modern browsers, this works:
const dbs = await window.indexedDB.databases()
dbs.forEach(db => { window.indexedDB.deleteDatabase(db.name) })

// for older browsers, have a look at previous revisions of this gist.

## gsap-properties-cheat-sheet.md

      
              1 file
            
          
              13 forks
            
          
              4 comments
            
          
              73 stars
            
          
                lunelson
                / gsap-properties-cheat-sheet.md
            
            
              Last active
              January 28, 2024 22:07
            
              
                Greensock Properties Cheat Sheet
              
          
    Greensock CSS properties Cheat Sheet

I wrote this as a reference for myself because some of the property names are non-obvious, and there are a number of relevant special properties, and there is no central concise listing of them all in GSAP Docs, other than (in longer form) on the CSSPlugin page.
Standard CSS properties

...are all supported, with hyphenated-names becoming camelCaseNames. Non-animatable properties are also supported but they will be set at the beginning of the tween.
Special mentions:

  
## what-forces-layout.md

      
              1 file
            
          
              833 forks
            
          
              110 comments
            
          
              8224 stars
            
          
                paulirish
                / what-forces-layout.md
            
            
              Last active
              October 16, 2024 17:41
            
              
                What forces layout/reflow. The comprehensive list.
              
          
    What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
Element APIs

Getting box metrics


elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent


## Rails部署指南.md

      
              1 file
            
          
              3 forks
            
          
              0 comments
            
          
              12 stars
            
          
                tailang
                / Rails部署指南.md
            
            
              Created
              November 7, 2015 15:46
            
          
    一路过来也部署过3、4个Rails App了，其中也使用过mina等远程部署项目，但每次去部署新的App还是会遇到一些大大小小问题。最近和几个朋友正在做一个应用，在部署的过程中又被自己坑了~所以今天准备总结一下，方便自己未来的部署之路，也方便Rails新手学习使用。
#####环境说明
因为Linux的发型版太多，所以不能一一举例，经过自己的实践体验，发现Ubuntu可以更轻松的部署您的Rails App（个人看法，曾经在Centos下部署，遇到了好多坑）。所以该博文将基于以下的部署环境。

操作系统：Ubuntu14.04
Rails：4.2.0
Ruby：2.2.1
Mysql: 5.6.22
Nginx: 1.8.0
Puma: 2.11.0


## index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <!-- we use 'preload_' instead of 'preload' to make it testable in chrome -->
    <link rel="preload_" onload="console.log(this, 'script');" href="http://code.jquery.com/jquery-1.12.1.js" as="script" />
    <link rel="preload_" onload="console.log(this, 'style');" href="https://cdn.jsdelivr.net/bootstrap/3.3.6/css/bootstrap.min.css" as="style" />
    <link rel="preload_" onload="console.log(this, 'font');" href="LatoLatin-Regular.woff" as="font" type="font/woff" crossorigin="" />
	#.gitignore
	# Numerous always-ignore extensions
	*.diff
	*.err
	*.orig
	*.log
	*.rej
	*.swo
	*.swp
	*.vi
	.visible-android {
	display:none;
	}
	.visible-ios {
	display:none;
	}
	.on-device .visible-android, .on-device .visible-android {
	display:inherit;
	}
	.device-ios .visible-android {
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Title</title>

	<!-- we use 'preload_' instead of 'preload' to make it testable in chrome -->
	<link rel="preload_" onload="console.log(this, 'script');" href="http://code.jquery.com/jquery-1.12.1.js" as="script" />
	<link rel="preload_" onload="console.log(this, 'style');" href="https://cdn.jsdelivr.net/bootstrap/3.3.6/css/bootstrap.min.css" as="style" />
	<link rel="preload_" onload="console.log(this, 'font');" href="LatoLatin-Regular.woff" as="font" type="font/woff" crossorigin="" />