From: Stephan Mueller <d454d@...>
Date: 2007-10-09T18:46:49+09:00
Subject: Indexers and blocks?

Hi,

if I have an array-like class, is it possible to call the index with a
block?

class MyClass
  def find(key)
    return nil
  end

  def [](key)
    if (val = find(key))
      return val
    else
      return yield(key) if block_given?
    end
  end
end

c = MyClass.new
c[:test] { "default" }

triggers a syntax error (Ruby 1.8.6).

Is there a way to accomplish this or do i need to do tricks like giving
the block to the constructor?


Cheers,

Steph.