From: Wojciech Kaczmarek <schatten@...>
Date: 2003-03-13T14:17:29+09:00
Subject: next iteration within a block

What is the most short/elegant way of ending the current iteration
within a block? My first thought was that `next' will break the
iteration and last evaluated expr will be returned to the caller, but
surprisingly `nil' is returned this way, so we have (Ruby 1.6.8):

['bar','quux'].map {'foo'; next; 42}
=> [nil, nil]

instead of two foos in an array.

In a real code, when I don't want to make the content of a block a
multibranched if statement (or something similar), I use something
like that:

#v+
aMethod do |item|
  catch :next do
    #blah  
    throw :next, special_result if special_condition
    #blahblah
    default_result      
  end  
end
#v-

...but maybe there's something better? (I really don't think I found a
bug regarding `next' behaviour :)

-- 
We demand rigidly defined areas of doubt and uncertainty!