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If you're writing web applications with Ruby there comes a time when you might need something a lot simpler, or even faster, than Ruby on Rails or the Sinatra micro-framework. Enter Rack.

Rack describes itself as follows:

Rack provides a minimal interface between webservers supporting Ruby and Ruby frameworks.

Before Rack came along Ruby web frameworks all implemented their own interfaces, which made it incredibly difficult to write web servers for them, or to share code between two different frameworks. Now almost all Ruby web frameworks implement Rack, including Rails and Sinatra, meaning that these applications can now behave in a similar fashion to one another.

At it's core Rack provides a great set of tools to allow you to build the most simple web application or interface you can. Rack applications can be written in a single line of code. But we're getting ahead of ourselves a bit.

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class Saga
  class << self
    def with_redis; raise NotImplementedError; end
    attr_accessor :cleanup_delay, :queue, :last_txid

    def queue
      Thread.current[:saga_queue] ||= []
    end

    def last_txid

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class DirtyPipeline::Action
  module WrappedCall
    def call
      Events.publish! Event.generate(self)
      super
    end
  end

  class << self
    attr_accessor :attempted_event_klass, :pipeline, :timeout

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分辨需要设置的代理

• HTTP 形式：

  git clone https://github.com/owner/git.git

• SSH 形式：

  git clone git@github.com:owner/git.git

一、HTTP 形式

走 HTTP 代理

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Configure Git to use a proxy

In Brief

You may need to configure a proxy server if you're having trouble cloning or fetching from a remote repository or getting an error like unable to access '...' Couldn't resolve host '...'.

Consider something like:

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# First the end result of what we want:

class Foo
  before_hook :whoa
  before_hook :amazing

  def test
    puts "This is kinda cool!"
  end

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# 1. Clear retry set

Sidekiq::RetrySet.new.clear

# 2. Clear scheduled jobs 

Sidekiq::ScheduledSet.new.clear

# 3. Clear 'Processed' and 'Failed' jobs

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#!/usr/bin/env ruby
# untitled.rb

# Created by Paolo Bosetti on 2011-04-22.
# Copyright (c) 2011 University of Trento. All rights reserved.

require "rubygems"
require 'ffi'

module Shared

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pragma solidity ^0.4.10;

contract Ownable {
  address owner;
  function Ownable() public {
    owner = msg.sender;
  }

  modifier Owned {
    require(msg.sender == owner);

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        Getting started aws ses
http://codechannels.com/video/amazonwebservices/cloud/getting-started-with-amazon-ses/

1.   Verify email address

In the sandbox you can send email only from emails yiu have verified.
Go to email AWS SES then on the left clcik on 'verified senders'
to start the verification process:
 a. click 'verify a ne sender'
  in the dialogue box add your email and click submit. you will receive