Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:(?:\B-)?\d+,?)+

+repeats the group contents below at least once:

Non-Capturing Group(?:\B-)?

?repeats the group contents below at most once:

\Bnot an ASCII word boundary

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a digit, repeated at least once

,?optionally matches the literal , (44₁₀ / 54₈ / 2C₁₆)

\ban ASCII word boundary

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

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26 tokens

^(?:(?:\B-)?\d+,?)+\b$

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