Inspectopedia Help

Empty slice declared using a literal

Reports slice declarations with empty literal initializers used instead of nil.

An empty slice can be represented by nil or an empty slice literal. They are functionally equivalent — their len and cap are both zero — but the nil slice is the preferred style. For more information about empty slices, refer to Declaring Empty Slices at github.com/golang.

Example:

s := []string{}

To change the declaration, use the Replace with nil slice declaration (changes semantics) quick-fix. After the quick-fix is applied:

var s []string

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.

GoPreferNilSlice
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

Availability

By default bundled with

GoLand 2024.1, Qodana for Go 2024.1,

Can be installed with plugin

Go, 241.SNAPSHOT

Last modified: 18 June 2024