February 2014
Intermediate to advanced
248 pages
4h 23m
Japanese
Content preview from 実践 Vagrant
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148
7 章 プラグインによる Vagrant の拡張
vagrant
）を読むことです。
Vagrant 2.0
はまだ登場していないため、利用可能なアク
ションシーケンスは、現在も活発に変更されていることから、本書で完全なリストを
紹介することは不可能です。
このコンポーネントの次の主要部分は、「フック」オブジェクトそのものです。こ
のオブジェクトは、アクションのシーケンスのどこにフックするのかを記述するた
めのメソッドを数多く持っています。この例では、
hook.prepend
メソッドを使って
います。このメソッドは、
Vagrant
に対し、指定したアクションシーケンスの先頭
の前にアクションを追加するよう指示します。また、見た目も動作もよく似ている
append
というメソッドもあります。「フック」オブジェクトのすべてのメソッドは、
アクションの実装を引数に取ります。それらについては、次のセクションで議論しま
す。
「フック」オブジェクトは、実際には
Vagrant::Action::Hook
のインスタンスで
す。このクラスの記述は非常に充実しています。フック
API
について深く学びたい
場合は、このクラスのコメントを読んでください。
7.8.2
実装
アクションの実装は、シンプルな普通の
Ruby
のクラスです。アクションは、
Rack middleware
（
http://stackoverflow.com/questions/2256569/what-is-rack-
middleware
）をまねてモデル化されています ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.