Anonymous capturing group or numeric back reference
Reports anonymous capturing groups and numeric back references in a RegExp. These are only reported when the RegExp dialect supports named group and named group references. Named groups and named back references improve code readability and are recommended to use instead. When a capture is not needed, matching can be more performant and use less memory by using a non-capturing group, i.e. (?:xxx) instead of (xxx).
Example:
(\d\d\d\d)\1A better regex pattern could look like this:
(?<quad>\d\d\d\d)\k<quad>- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
RegExpAnonymousGroup
New in 2017.2
Inspection ID: RegExpAnonymousGroup
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
//noinspection RegExpAnonymousGroupnote
Actual comment syntax will depend on the code language you are working with
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
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By default bundled with: | CLion 2025.2, DataGrip 2025.2, DataSpell 2025.2, GoLand 2025.2, IntelliJ IDEA 2025.2, JetBrains Rider 2025.2, PhpStorm 2025.2, PyCharm 2025.2, Qodana for .NET 2025.2, Qodana for Go 2025.2, Qodana for JS 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, Qodana for Ruby 2025.2, RubyMine 2025.2, WebStorm 2025.2 |