From: Dave Bass <davebass@...>
Date: 2008-05-28T18:24:29+09:00
Subject: Re: OOP in Ruby?

In Ruby you only need to add "lambda" to make a block into an object:

irb(main):006:0> x = lambda { i += 1 }
=> #<Proc:0x02e13cf8@(irb):6>
irb(main):007:0> x.class
=> Proc
irb(main):008:0> lambda { i += 1 }.class
=> Proc

I suppose the need to prepend "lambda" is a good thing in that it gives 
you the flexibility of choosing whether you want to make your block into 
an object or not, whereas in Smalltalk presumably all blocks are 
automatically objects. There may be some small overhead associated with 
this, I don't know.

Declaring blocks with "lambda" is a bit like declaring variables before 
you can use them, something I miss with Ruby.
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