From: Brian Candler <b.candler@...>
Date: 2011-09-30T22:58:00+09:00
Subject: Re: using alias_method before function definition

Reginald Tan wrote in post #1024307:
> The example would work if I put the profile method
> after the method name, but is there a cleaner solution to make this
> work?

I don't think so. The trouble is, alias_method acts on the version of 
the method *as it was defined at that time*. So you could define a dummy 
method first, and copy it with alias_method, but when you redefine it 
the alias would still point to the first one.

  def foo
    puts "Version 1"
  end

  alias :bar :foo

  def foo
    puts "Version 2"
  end

  foo   # prints "Version 2"
  bar   # prints "Version 1"

HTH,

Brian.

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