douzhongjiu2263 2017-08-15 03:40
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如何在Golang中编写isNumeric函数?

I want to check if a string is numeric.

For example:

  • "abcd123" should return false.
  • "1.4" or "240" should return true.

I thought about using ParseInt and ParseFloat (from the strconv package), but am not sure if that is the right way.

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  • doushe8577 2017-08-15 04:21
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    I was thinking of using strconv ParseInt and ParseFloat but not sure if that is the right way.

    Well, it's certainly a right way.

    You don't need to use ParseInt, though. ParseFloat will do the job.

    func isNumeric(s string) bool {
        _, err := strconv.ParseFloat(s, 64)
        return err == nil
    }
    

    See an example here: https://play.golang.org/p/D53HRS-KIL

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