You're quite right about the use of ?. I forgot that it stands for {0,1}.

What would you say about /^[-+]?\d+\.?0*$/? No capturing or clustering parentheses necessary and it will accept an (optional) plus-sign as well.

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law

In reply to Re: Re^3: positive integer identification (regular expression question) by CountZero
in thread positive integer identification (regular expression question) by noggon

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