From: Peter Alvin <form@...>
Date: 2008-09-29T06:19:01+09:00
Subject: irb: 1 & 1 => 1, not true    huh?  I thought 1 & 1 => true

In irb I did:

puts 1 & 1
and get 1
shouldn't I get true?

Bottom line is this: What is Ruby idiom to test for bit mask?  Is there
a more simple way to write:

if session[:permissions] & Permissions::SomeMask ==
Permissions::SomeMask
  # user has permission to wash clothes, etc.
end

TIA,
Pete
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