データ型(文字列や数値、配列などか)の判断 - ruby - Silent Bob の プログラムまとめ参考 http://railsforphp.com/reference/var/is_int ------------------------------------------------------------ # 例1 num = 89561.0 p num.is_a?(Integer) # => false p num.is_a?(Float) # => true # 例2 str = '89561.0' p str.is_a?(String) # => true # 例3 colors = ["red", "green", "blue"] p colors.is_a?(Array) # => true # 例4 number = 2 p number.is_a?(Numeric) # => true number = 1.2 p number.is_a?(Numeric)
