From: Arlen Cuss <celtic@...>
Date: 2008-03-09T14:00:25+09:00
Subject: Re: A question on singleton methods

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Hi,

On Sun, Mar 9, 2008 at 3:39 PM, 7stud -- <bbxx789_05ss@yahoo.com> wrote:

> A method name is not a string.
>

I think you're a bit off the mark. He's redefining an existing method with a
new singleton one.

>> h = {:a => 1}
=> {:a=>1}
>> puts h.class
=> Hash

$ ri Hash#length
------------------------------------------------------------ Hash#length
     hsh.length    =>  fixnum
     hsh.size      =>  fixnum
------------------------------------------------------------------------


Yet:

>> def h.length
>>   puts "This works."
>> end
=> nil
>>

A method name is not a fixnum, either. He's not trying to define a method
called 'alpha', it was changing the definition of to_s.

Arlen

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