Regular Expressions 101

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 1(\s*\d+\s*\/\s*\d+\s*\/\s*\d+)

\s*any whitespace character, repeated any number of times

\d+a digit, repeated at least once

\s*any whitespace character, repeated any number of times

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\s*any whitespace character, repeated any number of times

\d+a digit, repeated at least once

\s*any whitespace character, repeated any number of times

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\s*any whitespace character, repeated any number of times

\d+a digit, repeated at least once

Group 2(\s*\*\s*\d+)?

?repeats the group contents below at most once:

\s*any whitespace character, repeated any number of times

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\s*any whitespace character, repeated any number of times

\d+a 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.

Search reference

Regular Expression

\-(\s*\d+\s*\/\s*\d+\s*\/\s*\d+)(\s*\*\s*\d+)?

New


I'm looking for regex to match date type patterns which start with hyphen and possible * + digit that might come after it. I have text input like this:

- 19/03/2081
- 20 / 02 / 1982
- 11/3/1950 * 1
- 21 / 11 / 2120 * 500000
01 / 09 / 2021
- 21 / 09 / 2021
20 / 09 / 2021 * 3
***12

Regular Expression

Extraction