From: Simon Strandgaard <neoneye@...>
Date: 2004-01-21T06:05:02+09:00
Subject: Re: question about blocks

On Wed, 21 Jan 2004 05:37:48 +0900, Ferenc Engard wrote:
> How can I return a value from a block? "return" immediately returns from
> the caller method, "break" bypasses the called method (which yielded the
> block).
> 
> I have read something about this, but cannot remember where. I know the
> syntax changed between 1.6.8 and 1.8.

How about this code?


server> ruby a.rb
before
after result=42
server> expand -t2 a.rb 
def test(&block)
  puts "before"
  res = nil
  begin
    res = block.call
  rescue LocalJumpError => e
    res = e.exit_value
  end
  puts "after result=#{res}"
end

test { return 42 }
server>

--
Simon Strandgaard