From: Brian Candler <b.candler@...>
Date: 2009-06-05T21:22:17+09:00
Subject: Re: Question about exiting from a block

Keeping it simple:

def test
  puts 'before'
  yield 2
  puts 'after'
end

test do |i|
  unless i > 1
    puts "a lot of code here"
  end
end

There's also throw/catch:

test do |i|
  catch(:done) do
    throw(:done) if i > 1
    puts "a lot of code here"
  end
end
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