ruby on rails - How can I check if a value is a number? -

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i want check if returned value form text field number i.e.: 12 , 12.5 or 12.75. there simple way check this, if value pulled param?

just regexp it, it's trivial, , not worth thinking beyond that:

v =~ /\a[-+]?[0-9]*\.?[0-9]+\z/

(fixed per justin's comment)


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