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Useless non capturing group in regex #164
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I doubt that it is equivalent to the original regex. non-capturing group means, that the group has to exist but is not in the resulting match. So the original regex expects atleast a number value before the dot. Your simplification says, that it can be also no digit at all before the dot. |
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Could simply be replaced with:
The
\d+
matches a digit one or more times. This match is then matched 0 or 1 time with the second?
in(?:\d+)?
. This whole sub-regex could simply be expressed as\d*
to match a digit 0 or more times.The text was updated successfully, but these errors were encountered: