Jan 8, 2026 · Groups group multiple patterns as a whole, and capturing groups provide extra submatch information when using a regular expression pattern to match against a string. …

Reference of the various syntactic elements that can appear in regular expressions

Grouping is a powerful feature of regular expressions that can simplify a complex pattern. For example, you can use grouping to match repeated sequences of characters, such as phone …

Jan 27, 2024 · Parentheses group together a part of the regular expression, so that the quantifier applies to it as a whole. Parentheses groups are numbered left-to-right, and can optionally be …

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Jul 23, 2025 · Using exec () with a global flag in a loop allows you to retrieve all matches and access their groups. The exec () method is used in a loop to find all matches of the regex …

5 days ago · The regular expression matched, yet I kept forgetting which number belonged to which part of the pattern. Accessing matched groups is the move that turns a cryptic pattern …

Learn about grouping in regular expressions, including combining patterns, capturing matches, applying quantifiers, and creating alternatives. Enhance your regex skills for more effective …

1 day ago · A regular expression (or RE) specifies a set of strings that matches it; the functions in this module let you check if a particular string matches a given regular expression (or if a given …

An essential feature of regex is grouping, which lets you treat multiple characters as a single unit, facilitating advanced pattern matching techniques. In this lesson, we'll explore the basics of …