in reply to can regex contains function?

Yes you can, see perlretut and perlrequick.

However, for the special case of upcasing the first letter, there is the ucfirst function. Similiar matter has also been discussed here in the monastery: Capitalize the 1st letter of each word, see also in perlfaq 4: How do I capitalize all the words on one line?

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Re^2: can regex contains function?
by toothedsword (Sexton) on Jun 19, 2020 at 07:44 UTC
    Thank you so much! Now I know how to solve this specific question. But do you know can I instert a function to the regex?
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      If I understand your question, the first responder answered it: use the /e qualifier.

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[d/l]
        Oh, sorry, I am so careless, Thank you so much!
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