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YoshitsuguFujii/hash.rb

Created December 27, 2012 08:56
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hash.rb
module ExtendBuiltInDataType
class ::Hash
def merge_apend_value(hash) #{{{
self.update(hash) do |key, self_val, other_val|
Array.wrap(self_val).push(other_val)
end
end #}}}
end
end
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