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types {
  # other mime types...

  application/json          json;
}

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善用 define_method

define_method 可以帮助我们动态的，快速的定义多个方法；比如有这样一个类：

class Post
  attr_accessor :title, :content, :state

  def initialize(title, content, state = :draft)
    @title, @content, @state = title, content, state

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require 'mina/bundler'
require 'mina/rails'
require 'mina/git'
require 'mina/rvm'

# Usually mina focuses on deploying to one host and the deploy options are therefore simple.
# In our case, there is a number of possible servers to deploy to, it is therefore necessary to
# specify the host that we are targeting.
server = ENV['server']
# Since the same host can have multiple applications running in parallel, it is necessary to

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DEPLOY_PATH = {
  :staging => 'app-name',
  :production => 'app-name',
  :uat     => 'app-name-uat'
}

SERVICES      = %w(app-name)
ENVIRONMENTS  = [:staging, :uat] #这是测试环境的配置，对于产品环境可以改成[:production]
TIMEOUT       = 30.seconds
LONG_TIMEOUT  = 60.seconds

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# lib/tasks/deploy.rake
namespace :deploy do
  desc 'Deploy to staging environment'
  task :staging do
    exec 'mina deploy -f config/deploy/staging.rb'
  end
end

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    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
        // Override point for customization after application launch.
        self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
        
        var nav1 = UINavigationController()
        var first = FirstViewController(nibName: nil, bundle: nil)
        nav1.viewControllers = [first]
        
        var second = SecondViewController(nibName: nil, bundle: nil)
        var nav2 = UINavigationController()

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class Patient
  include Mongoid::Document

  field :created_at,          type: Time
  field :updated_at,          type: Time

  def self.group_by(field, format = 'day')
    reduce = %Q{
      function(key, values) {
        var result = { count: 0 };

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require 'benchmark'

# rails runner  auto.rb


class AutoTest
  n = 1000

  Benchmark.bm do |x|