「Ruby」Hash.new の使い方
書式
Hash[[key =>|, value]* ] or
Hash.new [or] Hash.new(obj) [or]
Hash.new { |hash, key| block }
サンプルコード
#!/usr/bin/ruby $, = ", " months = Hash.new( "month" ) months = {"1" => "January", "2" => "February"} keys = months.keys puts "#{keys}"
実行結果
[“1", “2"]