Baozi2

```
  def change
    create_table :test do |t|
      t.jsonb :names, default: []
      t.jsob :profil, default: {}
      t.timestamps
    end
```

Baozi2

desc 'when run `rake` a task name default is run by default '
task :default do
 p 'I’m default'
end

desc 't0 task name 可以是 symbol或string'
task 't0' do
	p 't0'
end

Baozi2

jQuery的ajax数据中含有??
此问题仅在 dataType指定为JSON，并且data为string是出现。解决办法，
1. 转移data
2. 使用object的data
3. 指定contentType
4. 不指定dataType

Baozi2

如果设置了 prefix_url为 http://test.com/api
如果此时 get '/', { name: 1} 则请求路径会变为 http://test.com?name=1

Baozi2

namespace :test do
    task :lib => "test:prepare" do
      $: << "test"
      Rails::TestUnit::Runner.rake_run(["test/lib"])
    end
end

Baozi2

# ubuntu16.04 nginx安装
wget http://nginx.org/keys/nginx_signing.key
sudo apt-key add nginx_signing.key
deb http://nginx.org/packages/ubuntu/ xenial nginx
deb-src http://nginx.org/packages/ubuntu/ xenial nginx
sudo apt-get update 
sudo apt-get install nginx
vhost 实现多域名映射
upstream 实现反向代理

Baozi2

String.format("%08x", int);
8即为指定长度

Baozi2

function calAVG(array, interval){

  if(!(Array.isArray(array))) throw '参数异常'

  for(let ele of array){
    if(isNaN(parseFloat(ele))){
      throw '数组中有不能转换为数字的元素'
    }
  }

Baozi2

# install rvm /安装rvm
gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
\curl -sSL https://get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh
rvm install version
# install nginx/安装nginx 要安装最新的nginx版本参照官网 http://nginx.org/en/linux_packages.html#stable
sudo apt-get update
sudo apt-get install nginx
#show nginx version/显示nginx的版本
nginx -v

Baozi2

"use strict"
const fs = require('fs');
const path = require('path');

function MP(templateFile, options){
	let _this = this,
			mp = {};
	//获取webpack root
	let rootPath = path.dirname(module.parent.filename);
	let tmpFilePath = path.resolve(rootPath, templateFile);