From: Logan Capaldo <logancapaldo@...>
Date: 2006-07-14T12:54:04+09:00
Subject: Re: Preferred monkeypatching technique


On Jul 13, 2006, at 9:03 PM, Daniel DeLorme wrote:

> Tom Werner wrote:
>> Allow me to present a scenario:
>> class Firetruck
>>    def put_out_fire(options = {})
>>       # code
>>    end
>> end
>
> Here's what I'd do to keep it clean:
>
> module FastFiretruck
>   def initialize(*args)
>     super
>     self.extend FastFiretruck::Obj
>   end
>   module Obj
>     def put_out_fire(options = {})
>       super({:fast => "please!"}.merge(options))
>     end
>   end
> end
> Firetruck.class_eval{ include FastFiretruck }
>
> Daniel
>

And I thought the blah = instance_method closure trick was cool, but  
this beats the pants off it.

Note that you can use

Firetruck.send(:include, FastFiretruck)

or in 1.9 Firetruck.funcall(:include, FastFiretruck) to bypass the  
need for a block.