Re: how to run regex calculation

[Joseph He]

I think $str =~ /(\d+)\s(\d+)\s(??{$1*$2})/   should do it
My Perl version is  v5.26.1

Joseph

On Wed, Jan 8, 2020 at 8:36 PM Wesley Peng <wes...@magenta.de> wrote:

> Hello
>
> Give the case I have a string,
>
> $str = "2 3 6";
>
> I want to match with:
>
> true if $str =~ /(\d+)\s(\d+)\s($1*$2)/;
>
> that's to say, the thrid column would be (firstCol * SecondCol).
>
> How to write regex for this?
>
> Thank you.
>