From: Chris Roos <chrisjroos@...>
Date: 2006-07-18T20:41:14+09:00
Subject: Strange behaviour - Instantiating an object and giving it a block to be used as a method body

Hi,
In both examples below, the expected results are observed.  However,in the second example (class Bar) warnings are generated.  This isRuby 1.8.2 on Mac Os x 10.4.7.
I wonder if someone might be able to enlighten me?
Chris
class Foo  def initialize(&proc)    meta = class << self; self; end    meta.send(:define_method, :bar, &proc)  endend
foo = Foo.new { false }puts foo.bar #=> falsefoo = Foo.new { 'hello world' }puts foo.bar #=> hello_world
class Bar  def initialize(&proc)    class << self      define_method(:foo, &proc)    end  endend
bar = Bar.new { false }#=> warning:​ tried to create Proc object without a blockputs bar.foo #=> falsebar = Bar.new { 'hello_world' }#=> warning:​ tried to create Proc object without a blockputs bar.foo #=> hello_world