Redundant second index in slices

Last modified: 03 December 2024

Reports a redundant second index (a high bound) in slice expressions.

Usually, the second index is optional. If you remove it, you might improve code readability.

Example:

var a []int
a = a[0:len(a)] // `a[0:len(a)]` is the same as `a[0:]`

You can apply the Remove redundant index quick-fix to such cases. After the quick-fix is applied, this code looks as follows:

var a []int
a = a[0:]

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.

GoRedundantSecondIndexInSlices
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 | Go | Declaration redundancy

Inspection Details

By default bundled with:

GoLand 2024.3, Qodana for Go 2024.3,

Can be installed with plugin:

Go, 243.23131