Check whether a floating-point value is a number at all with Float's nan? : float « Number « Ruby






  1. Ruby
  2. Number
  3. float

Check whether a floating-point value is a number at all with Float's nan?


val = 1.0
val.nan? # => false
val = 0.0/0.0
val.inspect # => "NaN"
val.nan? # => true








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