1. All Inspections
  2. Go
  3. Declaration redundancy
  4. Redundant types in composite literals

Redundant types in composite literals

Last modified: Last modified: 18 September 2025

Reports redundant type declarations in composite literals.

Example:

nums := [][]int{[]int{1}, []int{2}}

We have a slice of slices of the int type. In this case, you can use a shorter definition. You can fix this code manually or use the Delete redundant type quick-fix. After the quick-fix is applied, the code looks as follows:

nums := [][]int{{1},{2}}

For more information about composite literals, refer to Go Language Specification: Composite Literals at go.dev.

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.

GoRedundantTypeDeclInCompositeLit
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 ID: GoRedundantTypeDeclInCompositeLit

Suppressing Inspection

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:

note

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

By default bundled with:

GoLand 2025.2, Qodana for Go 2025.2,

Can be installed with plugin:

Go, 252.26654.0