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itspriddle/bitmask.rb

Created January 5, 2014 02:16
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bitmask.rb
class Bitmask
ACTIONS = %W(create read update destroy)
def self.dump(actions)
(actions & ACTIONS).sum { |a| 1 << ACTIONS.index(a) }
end
def self.load(mask)
ACTIONS.reject { |a| ((mask || 0) & 1 << ACTIONS.index(a)).zero? }
end
end
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