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jnicklas / micro_hooks

Run the following if you haven't already:

gem sources -a https://gems.github.com

Install the gem(s):

sudo gem install jnicklas-micro_hooks

Description:	A tiny, tiny hooks framework. Really, very tiny.
Clone URL:	git://github.com/jnicklas/micro_hooks.git Give this clone URL to anyone. `git clone git://github.com/jnicklas/micro_hooks.git`

added gemspec

jnicklas (author)

Fri Feb 13 11:49:51 -0800 2009

commit 9f0756cd00353cd643027c34d4b6c7664fd13531
tree 4be9b050511b0faf0f410fe9f401bf43232d49ad
parent 4a3fdb016368f116ff308d095c7694b1d580809a

micro_hooks /

	name	age	history message
	.gitignore		Loading commit data...
	LICENSE
	README.md
	Rakefile
	lib/
	micro_hooks.gemspec
	spec/

MicroHooks

Hooks are a mechanism for allowing other code to hook into your library in a very modular way. It's basically a really, really simple way to implement callbacks. It works like this:

Create a class, include MicroHooks and add some hooks in your methods.

require 'rubygems'
require 'micro_hooks'
class SomeClass
  include MicroHooks
  def foo
    hook :before_foo
    puts "Monkey"
    hook :after_foo
  end
  def baz
    puts "-> Ape"
  end
  def quox
    puts "-> Bear"
  end
end

You can then add some hooks

SomeClass.before :foo, :baz
SomeClass.after :foo, :quox
s = SomeClass.new
s.foo

The result here would be:

-> Ape
Monkey
-> Bear

You can also pass arguments to hooks.

def foo(bar)
  hook :quox, bar
end
def baz(bar)
end

If baz is added as a hook on quox, then baz will be called with bar as an argument. (are you following?)

Original Source | Taken Source