From: Jamis Buck <jgb3@...>
Date: 2004-01-27T05:40:29+09:00
Subject: Re: def foo[](x)

Gavin Kistner wrote:

> #Works
> class Foo1
>     def [](x)
>         #...
>     end
> end
>
> #Syntax Error
> class Foo2
>     def bar[](x)
>         #...
>     end
> end
>
>
> Is there no way to define a method that has a name and [] in it, to be 
> able to do something like:
>
> myObj = Foo.new
> puts myObj.bar[12]
>
>
> ....without having to create a new class for bar and define the [] 
> method in that class?
>
> .
>

Well... you could so this:

  class Foo2
     def [](x)
        ...
     end

     def bar
         self
     end
  end

  myObj = Foo.new
  puts myObj.bar[12]

But then you're limited to one such attribute per class. Other than 
that, I know of no way to do what you described, aside from (as you 
mentioned) creating a different class that defines [], and then having 
an instance of that class associated with the bar attribute of Foo2. ;(

- Jamis

-- 
Jamis Buck
jgb3@email.byu.edu

ruby -h | ruby -e 'a=[];readlines.join.scan(/-(.)\[e|Kk(\S*)|le.l(..)e|#!(\S*)/) {|r| a << r.compact.first };puts "\n>#{a.join(%q/ /)}<\n\n"'