Unused type variable

Reports container, method, and type alias type variables that are unused within the project.

Container type variables are only checked if the container has exactly one declaration.

A quick fix is available to remove the unused type variable.

Example:

# Type variable 'A' of class 'Example' is unused
class Example[A]
end

After the quick fix:

class Example
end

Locating this inspection

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.

RbsUnusedTypeVariable

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | RBS | Data flow

Last modified: 18 June 2024