From: Sam Roberts <sroberts@...>
Date: 2004-11-15T08:36:42+09:00
Subject: Why can't I get an array range, like [3, 4], on a Struct?

I just noticed I can't do:

  x = Struct.new(...
  puts x[3, 4]
  
I'm doing this, instead, which works fine:

  x = Struct.new(...
  puts x.to_a[3, 4]

I guess it is because [] is not part of Enumerable, but why isn't []
defined by Enumerable? Is it because random access is so inefficient
when implemented with an iterator, for large collections, anyhow?

Maybe I answered my own question. :-)

I vaguely remember some discussion of some modules that would allow a
class that supported to_str mix in support for all the other String
methods, and something similar for Array/to_a, as well.

I'd like to mix a little bit more of Array into Struct!

Cheers,
Sam