I want a regular expression that accept a empty string or a decimal greater than zero
^[^0]
this avoid zero but not emty string
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2`^(?:[1-9][0-9]*)?$` – Wiktor Stribiżew Oct 15 '20 at 12:57
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thank you @WiktorStribiżew, $ is the trick – user3401335 Oct 15 '20 at 13:00