Map loop can be replaced with the 'maps' function

Reports loops that copy a map or collect its keys or values and can be replaced with maps.Copy, maps.Keys, or maps.Values.

These helpers express the intent directly and reduce boilerplate code.

Example with copy:

func Copy(dst, src map[string]int) {
	for k, v := range src {
		dst[k] = v
	}
}

To fix the code, use the Replace m[k]=v loop with maps.Copy quick-fix.

After the quick-fix is applied:

func Copy(dst, src map[string]int) {
	maps.Copy(dst, src)
}

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.

GoFixMapsLoop

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 | Go fix

Inspection ID: GoFixMapsLoop

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:

//noinspection GoFixMapsLoop

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

GoLand 2026.2

Inspection Details
By default bundled with:	GoLand 2026.2, Qodana for Go 2026.2,

Last modified: 30 June 2026