Regular Expressions 101

1st Alternative(?<=5;)(?P<date>\d{8})

Positive Lookbehind(?<=5;)

5;the literal text 5;

Group date(?P<date>\d{8})

\d{8}a Unicode decimal digit, repeated exactly 8 times

2nd Alternative(?<=;3;)(?P<value>\d+(?:\.\d+)?)

Positive Lookbehind(?<=;3;)

;3;the literal text ;3;

Group value(?P<value>\d+(?:\.\d+)?)

\d+a Unicode decimal digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a Unicode decimal digit, repeated at least once

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

Regular Expression

(?<=5;)(?P<date>\d{8})|(?<=;3;)(?P<value>\d+(?:\.\d+)?)

New

;2;4;2;5;20181201;3;102;5;20191201;3;101.000000;5;20201201;3;100.000000;5;20211201;3;100.000000;

;2;4;2;5;20181201;3;102;5;20191201;3;101.000000;5;20201201;3;100.000000;5;20211201;3;100.000000;