From: Robert Klemme <shortcutter@...>
Date: 2012-05-09T22:34:51+09:00
Subject: Re: How to make a given klass to include a module

On Wed, May 9, 2012 at 1:52 PM, Iñaki Baz Castillo <ibc@aliax.net> wrote:
> 2012/5/9 Quintus <quintus@quintilianus.eu>:
>> => A
>> irb(main):009:0> klass.send(:include, M)
>> => A
>> irb(main):010:0> a = klass.new
>> => #<A:0x0000000202cfe0>
>> irb(main):011:0> a.hello
>> => "HELLO"
>>
>> Alternatively, if you don’t want to pollute the given class, use #extend
>> on the instances (which is also more clean as it doesn’t require #send).
>
> Great!
>
> I've tested that first option is much faster (more than 10 times
> faster) than extending each instance, so I'll go with first solution.

Maybe also add an additional test:

irb(main):001:0> class A;end
=> nil
irb(main):002:0> module M; def hello; "hello" end end
=> nil
irb(main):003:0> M===A || A.send(:include, M)
=> A
irb(main):004:0> A.new.hello
=> "hello"

Cheers

robert

-- 
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