Standard practices say no non-root process gets to talk to the Internet on a port less than 1024. How, then, could I get Node talking on port 80 on EC2? (I wanted it to go as fast as possible and use the smallest possible share of my teeny tiny little micro-instance's resources, so proxying through nginx or Apache seemed suboptimal.)
Alter the port the script talks to from 8000 to 80:
}).listen(80);
Original discussion began on Twitter and can be found by starting here and here. Discussion was continued on es-discuss mailing list in the thread Pure win: Array.from and Array.of
Update Nov. 3, 2011
Official strawman has been posted: http://wiki.ecmascript.org/doku.php?id=strawman:array_extras
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| <!-- | |
| For other language: Instead of `ace/mode/ruby`, Use | |
| Markdown -> `ace/mode/markdown` | |
| Python -> `ace/mode/python` | |
| C/C++ -> `ace/mode/c_cpp` | |
| Javscript -> `ace/mode/javascript` | |
| Java -> `ace/mode/java` | |
| Scala- -> `ace/mode/scala` |
⇐ back to the gist-blog at jrw.fi
Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.
I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.
This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso
| import numpy as np | |
| import pylab as pl | |
| x = np.random.uniform(1, 100, 1000) | |
| y = np.log(x) + np.random.normal(0, .3, 1000) | |
| pl.scatter(x, y, s=1, label="log(x) with noise") | |
| pl.plot(np.arange(1, 100), np.log(np.arange(1, 100)), c="b", label="log(x) true function") | |
| pl.xlabel("x") | |
| pl.ylabel("f(x) = log(x)") |
When using directives, you often need to pass parameters to the directive. This can be done in several ways. The first 3 can be used whether scope is true or false. This is still a WIP, so validate for yourself.
Raw Attribute Strings
<div my-directive="some string" another-param="another string"></div>
| /** | |
| * @author zhixin wen <wenzhixin2010@gmail.com> | |
| * @version 0.0.1 | |
| * @github https://github.com/wenzhixin/ | |
| * @blog http://wenzhixin.net.cn | |
| */ | |
| (function($) { | |
| 'use strict'; |
| #!/usr/bin/env bash | |
| # MIT © Sindre Sorhus - sindresorhus.com | |
| # git hook to run a command after `git pull` if a specified file was changed | |
| # Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`. | |
| changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)" | |
| check_run() { | |
| echo "$changed_files" | grep --quiet "$1" && eval "$2" |
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.
express是nodejs平台上一个非常流行的框架，4.2.0是最新的版本，相比3.x版本优化了代码和api，去除了connect模块，自己实现了一个router组件，实现http请求的顺序流程处理，去除了很多绑定的中间件，使代码更清晰。
##1.使用express 如何使用express在官网有很好的讲解，只用experssjs实例app的几个函数，就可以构建构建web程序。