module Gemmy::Patches::HashPatch::InstanceMethods::Inverse
Public Instance Methods
inverse()
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facets h = {“a”=>3, “b”=>3, “c”=>3, “d”=>2, “e”=>9, “f”=>3, “g”=>9} h.invert #=> {2=>“d”, 3=>“f”, 9=>“g”} h.inverse #=> {2=>“d”, 3=>[“f”, “c”, “b”, “a”], 9=>[“g”, “e”]} h.inverse.inverse #=> {“a”=>3, “b”=>3, “c”=>3, “d”=>2, “e”=>9, “f”=>3, “g”=>9}
# File lib/gemmy/patches/hash_patch.rb, line 200 def inverse i = Hash.new self.each_pair{ |k,v| if (Array === v) v.each{ |x| i[x] = ( i.has_key?(x) ? [k,i[x]].flatten : k ) } else i[v] = ( i.has_key?(v) ? [k,i[v]].flatten : k ) end } return i end