ruby is int
1.is_a? Integer
=> true
"[email protected]".is_a? Integer
=> false
nil.is_a? Integer
=> falseruby is int
1.is_a? Integer
=> true
"[email protected]".is_a? Integer
=> false
nil.is_a? Integer
=> falseruby check if string is integer
class String
def numeric?
Float(self) != nil rescue false
end
end
"Hello World!".numeric?Copyright © 2021 Codeinu
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