How Can I Ensure Struct Field Modifications Persist in Go Methods?

Struct Field Reverting After Modification

In Go, modifying a struct field within a method may not persist the changes outside the method. This occurs when the struct is passed by value, causing only a copy of the struct to be modified.

To resolve this issue, structs should be passed by pointer using the asterisk (*) operator before the struct name in the receiver type declaration. This ensures that the original struct, rather than a copy, is modified within the method.

For example, in the provided code:

func (this MockConnector) sendCommand(payload map[string]string) {

should be modified to:

func (this *MockConnector) sendCommand(payload map[string]string) {

Additionally, it is considered a convention in Go to use a receiver name other than this or self.

By following these guidelines, struct fields can be modified effectively within methods and their changes will be preserved once the method completes.

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