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Assignment to a receiver

Reports assignments to method receivers.

When you assign a value to the method receiver, the value will not be reflected outside of the method itself. Values will be reflected in subsequent calls from the same method.

Example:

package main import "fmt" type demo struct { Val int } func (d *demo) change() { d = nil // Assignment to the method receiver propagates only to callees but not to callers d.myVal() } func (d *demo) myVal() { fmt.Printf("my val: %#v\n", d) } func (d demo) change2() { d = demo{} // Assignment to the method receiver doesn't propagate to other calls d.myVal() } func (d *demo) change3() { d.Val = 3 d.myVal() } func main() { d := &demo{} d.myVal() d.change() d.myVal() d.Val = 2 d.change2() d.myVal() d.change3() d.myVal() }

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.

GoAssignmentToReceiver
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 | Control flow issues

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