From: 7stud -- <bbxx789_05ss@...>
Date: 2008-03-09T13:39:59+09:00
Subject: Re: A question on singleton methods

mike leonard wrote:
> Hello,
> 
> I have a hash full of objects, like so:
> 
>     a_hash = { :a => "alpha", :b => "beta" }
> 
> I don't I need to define a singleton method for one of the items in
> the class. I thought I could do:
> 
>     def a_hash.fetch(:a).to_s
>         "ALPHA"
>     end
> 

a_hash = { :a => "alpha", :b => "beta" }

val = a_hash.fetch(:a)
puts val.class   #String

$ri String#to_s

------------------------------------------------------------ String#to_s
     str.to_s     => str
     str.to_str   => str
------------------------------------------------------------------------
     Returns the receiver.


And you don't define methods like this:

def "sayhi"
  puts 'hi'
end

You define them like this:

def sayhi
  puts 'hi'
end

A method name is not a string.


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