Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:(\d{0,2})-)?

?repeats the group contents below at most once:

Group 1(\d{0,2})

\d{0,2}a Unicode decimal digit, repeated between 0 and 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:(\d{0,2}):)?

?repeats the group contents below at most once:

Group 2(\d{0,2})

\d{0,2}a Unicode decimal digit, repeated between 0 and 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 3(\d{0,2}\.?\d*)

\d{0,2}a Unicode decimal digit, repeated between 0 and 2 times

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

\d*a Unicode decimal digit, repeated any number of times

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

Detailed match information will be displayed here automatically.

25 tokens

^(?:(\d{0,2})-)?(?:(\d{0,2}):)?(\d{0,2}\.?\d*)

New

1:42.15 (1)
19.78 (1)
2-24:04
8:03.280 (1)

1:42.15 (1)