From: Phillip Gawlowski <cmdjackryan@...>
Date: 2008-04-30T23:02:05+09:00
Subject: Re: How to create "def method(item)= (value)" ?

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David A. Black wrote:

|>
|> Sort of. As a singleton method, you get the syntax error. But not if you
|> define [] as a method:
|>
|> irb(main):001:0> def []=(key,value)
|> irb(main):002:1> end
|> => nil
|
| It's not the singletonness that stops it; you can do this:
|
|   def object.[]=(k,v) # etc.
|
| What made my example wrong was that I had concocted an illegal method
| name.

Though, it should (might?) be possible to implemetn something like
Hash's or Array's

hash[key]
array[index]

index methods for plain old object instances, too.

I haven't seen such an implementation, though, and my C and Java fu are
too weak to make sense of JRuby or CRuby.

Maybe Rubinius is a starting point, since it supposedly implement core
classes in Ruby.

- --
Phillip Gawlowski
Twitter: twitter.com/cynicalryan
Blog: http://justarubyist.blogspot.com

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