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Hash and Symbols
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#ruby 2.3.1 puts "Hash and Symbols:" def m a, ap, b, bp puts " method m called with #{a[ap]} and #{b[bp]}" puts " method m called with #{a[:a]} and #{b[:b]}" end m({:xxx => 1, :a => 2}, :xxx, {:yyy => 3, b:4}, :yyy)
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Hash and Symbols! method m called with 1 and 3 method m called with 2 and 4