Course of Raku / Regexes and grammars / Regexes

Captures

Matching tells you whether a pattern is present. A capture goes further: it remembers a particular piece of the match so you can use it afterwards. This is how you pull a year out of a date, a name out of a record, or the parts of any structured string.

Raku has two kinds of captures: positional ones, numbered from zero, and named ones, which you label yourself. Both are reached through the match object.

Topics in this section

• Positional captures
• Named captures
• Non-capturing groups

Practice

Complete the quizzes that cover the contents of this section.

• Quiz — Positional captures
• Quiz — Captures

Exercises

This section contains 4 exercises. Examine all the topics of this section before doing the coding practice.

1. Split a filename
2. City and country
3. Last name first
4. Initial and surname

Course navigation

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