Jichao Ouyang jcouyang

## 2014-02-09-use-q-promise-to-flat-you-async-ajax-and-make-tdd-easy.org

      
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                jcouyang
                / 2014-02-09-use-q-promise-to-flat-you-async-ajax-and-make-tdd-easy.org
            
            
              Created
              April 1, 2014 13:29
            
              
                Why Promises will make async easy
              
          
    What is Promises

Promise is a proxy for a value not knowing when its creation time. It provide 2 Methods then and catch, which return promise so they can be chained.
Promise.prototype.then(onFulfilled, onRejected)

Appends fullfillment and rejection handlers to the promise, and returns a new promise resolving to the return value of the called handler.
Promise.prototype.catch(onRejected)

Appends a rejection handler callback to the promise, and returns a new promise resolving to the return value of the callback if it is called, or to its original fulfillment value if the promise is instead fulfilled.

  
## 2012-12-31-node-dot-js-vs-tornado-vs-php.markdown

      
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                jcouyang
                / 2012-12-31-node-dot-js-vs-tornado-vs-php.markdown
            
            
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              January 15, 2021 02:38
            
              
                为什么事件驱动服务器这么火
              
          
本文基本上这为两篇文章的翻译和整合 --
Scalable networking And
Why are event-driven server so great

OPPC模型瓶颈

传统服务器模型如Apache为每一个请求生成一个子进程。当用户连接到服务器的一个子进程就产生，并处理连接。每个连接获得一个单独的线程和子进程。当用户请求数据返回时，子进程开始等待数据库操作返回。如果此时另一个用户也请求返回数据，这时就产生了阻塞。
这种模式在非常小的工作负荷是表现良好，当请求的数量变得太大是服务器会压力过于巨大。 当Apache达到进程的最大数量，所有进程都变得缓慢。每个请求都有自己的线程，如果服务代码使用PHP编写时，每个进程所需要的内存量是相当大的[1]。
fork()操作延时


## 2013-05-25-flash-dd-wrt-and-install-transmission.md

      
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                jcouyang
                / 2013-05-25-flash-dd-wrt-and-install-transmission.md
            
            
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              January 21, 2023 07:03
            
              
                flash dd-wrt and install transmission in WNR2200 router
              
          
    Prepaire


USB disk
格式化成ext2/3格式, with gparted in linux. 根据官方wiki, 最新的v24已经
不用jffs了, 目前的dd-wrt目录结构是这样的:

/tmp ## mounted on the RAM drive of dd-wrt
/jffs  ## builti-in flash, 已经disable
/mnt ## used for rw drive


## all github 887 emojis.md

      
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                jcouyang
                / all github 887 emojis.md
            
            
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              February 5, 2018 08:05
            
              
                all github 887 emoji
              
          
    💯 👍 👎 🔢 🎱 🅰️ 🆎 🔤 🔡 🉑 🚡 ✈️ ⏰ 👽 🚑 ⚓ 👼 💢 😠 😧 🐜 🍎 ♒ ♈ ◀️ ⏬ ⏫ ⬇️ 🔽 ▶️ ⤵️ ⤴️ ⬅️ ↙️ ↘️ ➡️ ↪️ ⬆️ ↕️ 🔼 ↖️ ↗️ 🔃 🔄 🎨 🚛 😲 👟 🏧 🅱️ 👶 🍼 🐤 🚼 🔙 🛄 🎈 ☑️ 🎍 🍌 ‼️ 🏦 📊 💈 ⚾ 🏀 🛀 🛁 🔋 🐻 🐝 🍺 🍻 🪲 🔰 🔔 🍱 🚴 🚲 👙 🐦 🎂 ⚫ 🃏 ⬛ ◾ :

  
## learnjulia.jl
# 单行注释只需要一个井号
#= 多行注释
   只需要以 '#=' 开始 '=#' 结束
   还可以嵌套.
=#

####################################################
## 1. 原始类型与操作符
####################################################

## atom workspaceView events
```
application:about: "Application: About"
application:bring-all-windows-to-front: "Application: Bring All Windows To Front"
application:hide: "Application: Hide"
application:hide-other-applications: "Application: Hide Other Applications"
application:minimize: "Application: Minimize"
application:new-file: "Application: New File"
application:new-window: "Application: New Window"
application:open: "Application: Open"
application:open-dev: "Application: Open Dev"

## 00 Setup Env.md

      
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                jcouyang
                / 00 Setup Env.md
            
            
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              September 8, 2016 01:44
            
              
                Build Yourself a Backbone.js Step by Step
              
          
    Install Node

brew install node
node here is use for setup tools like grunt and mocha
npm install -g grunt
grunt is js build tool.

  
## replace_evernote.md

      
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                jcouyang
                / replace_evernote.md
            
            
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              July 9, 2020 01:05
            
              
                Why do we still need Evernote since there is awesome gist.github.com
              
          
    I'm a Emacs user and as you may know there is a awesome mode called gist.el, and since then, I found that it's completely my Evernote replacement. Why replace Evernote with gist?

code snippet (very significant reason)
Version Control, gist actually is a git repo, so you have all the commit history.
Social, fork, star, and comment as well.
I have emacs open all the time my machine is on. no reason open another app for note taking.
annoying Evernote text editor without emacs like shotcut.
Github Flavored Markdown(with emoji), or even org-mode and reStructuredText support.

But since there are not so many Emacsers, I create a Atom package glist which do the exact thing as gist.el for Atom.io. as atom support markdown instant preview, note taking with gist is even better.

  
## why-curry-helps.md

      
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                jcouyang
                / why-curry-helps.md
            
            
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              February 20, 2023 21:09
            
              
                为什么要柯里化（why-curry-helps）slide http://git.io/why-curry-helps 📈
              
          
    还记得 Haskell Curry吗，
多巧啊, 人家姓 Curry 名 Haskell, 难怪 Haskell 语言会自动柯里化, 呵呵. 但是不奇怪吗, 为什么要柯里化呢. 为什么如此重要导致 Haskell 会默认自动柯里化所有函数, 不就是返回一个部分配置好的函数吗.
我们来看一个 Haskell 的代码.
max 3 4
(max 3) 4

  
## vpn
#!/bin/sh
/opt/cisco/anyconnect/bin/vpn -s $1 blur.blur.com <<"EOF"
0
your.name
your.password
y
exit
EOF
	# 单行注释只需要一个井号
	#= 多行注释
	只需要以 '#=' 开始 '=#' 结束
	还可以嵌套.
	=#

	####################################################
	## 1. 原始类型与操作符
	####################################################
	```
	application:about: "Application: About"
	application:bring-all-windows-to-front: "Application: Bring All Windows To Front"
	application:hide: "Application: Hide"
	application:hide-other-applications: "Application: Hide Other Applications"
	application:minimize: "Application: Minimize"
	application:new-file: "Application: New File"
	application:new-window: "Application: New Window"
	application:open: "Application: Open"
	application:open-dev: "Application: Open Dev"
	#!/bin/sh
	/opt/cisco/anyconnect/bin/vpn -s $1 blur.blur.com <<"EOF"
	0
	your.name
	your.password
	y
	exit
	EOF