Then, I was told NO, please can you use substr function?
I think that the person who told this was wrong

I don't think it's a case when performance matters. You are working with $ARGV[0], which means it's something done once in the beginning of program

I assume maintainbility and readability is more important here, than tiny performance improvements.
And Perl program written in "C" style (with substr() and index() everywhere) isn't considered readable

In reply to Re: SUBSTR OR REGEX: WHICH WILL YOU FAVOUR? by vsespb
in thread SUBSTR OR REGEX: WHICH WILL YOU FAVOUR? by Anonymous Monk

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