start new:
tmux
start new with session name:
tmux new -s myname
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 |
/** | |
* 分析豆瓣阅读查看电子书的逻辑 | |
* | |
* 主要用到的JavaScript为 | |
* 1. OzJS(管理模块) | |
* 2. jQuery(base库) | |
* 3. Backbone.js(web application框架) | |
* | |
* 过程分析 | |
* -------- |
Here's an example of how to debug Mocha v4 if it hangs.
Ensure you're using a Node.js 8 or newer (or any version with async_hooks support).
If you run your test, you'll notice it hangs:
$ mocha test.js
// XPath CheatSheet | |
// To test XPath in your Chrome Debugger: $x('/html/body') | |
// http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/ | |
// 0. XPath Examples. | |
// More: http://xpath.alephzarro.com/content/cheatsheet.html | |
'//hr[@class="edge" and position()=1]' // every first hr of 'edge' class |
In this document I am using Sass's SCSS syntax. You can choose to use the indented syntax in sass, if you prefer it, it has no functional differences from the SCSS syntax.
For Less, I'm using the JavaScript version because this is what they suggest on the website. The ruby version may be different.