DataGrip 2021.2 Help

Code Inspection: 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)\1


A better regex pattern could look like this:
(?<quad>\d\d\d\d)\k<quad>


New in 2017.2

Suppress an inspection in the editor

  1. Position the caret at the highlighted line and press Alt+Enter or click the Intention action icon.

  2. Click the arrow next to the inspection you want to suppress and select the necessary suppress action.

Last modified: 16 July 2021