From: "Peña, Botp" <botp@...>
Date: 2008-04-05T12:29:04+09:00
Subject: Re: The ||= assignment operator

From: Chris Shea [mailto:cmshea@gmail.com] 
# It's better to think of x ||= "ruby" as x || x = "ruby".
# 
# --
# h = Hash.new('default value')
# 
# h[:test] ||= 'assigned value'
# h # => {}
# 
# # same as:
# h[:test] || h[:test] = 'assigned value'
# h # => {}
# 
# # not:
# h[:test] = h[:test] || 'assigned value'
# h # => {:test=>"default value"}


i'd say that's a bug in design (unless x+=1 is now x+x=1 ;)

kind regards -botp