Re: How to check if a field is a number (integer or float)?

[Peng Yu]

The best solution that I figured out is just `typeof(x) == "strnum"`||
typeof(x) == "number"` instead of using regex.

However, I see many wrong answers. For example, the following seems to
be wrong in corner cases.

https://bougui505.github.io/linux/2015/09/24/awk_determine_if_a_string_is_numeric.html

Please let me know the way to test something can be interpreted as a
number with 100% accuracy. Thanks.

On 6/19/21, Peng Yu <pengyu.ut@gmail.com> wrote:
> Hi,
>
> I am wondering what is the best way to test if a field is a number
> (integer of float). I could use regex. But I am wondering if there is
> a more awk-native way to do the test. Also if regex is used, what is
> the regex that matches integer/float used awk. Thanks.
>
> --
> Regards,
> Peng
>


-- 
Regards,
Peng