What is the difference between Go's dynamic and static dispatch for method calls?

In Go, methods can be called using either dynamic or static dispatch.

Dynamic dispatch is when the method to be called is determined at runtime based on the actual type of the receiver. This is typically used when the type of the receiver is unknown at compile time, such as when using interfaces. In dynamic dispatch, the method call is resolved at runtime based on the type of the object that the method is called on.

Static dispatch, on the other hand, is when the method to be called is determined at compile time based on the declared type of the receiver. This is typically used when the type of the receiver is known at compile time. In static dispatch, the method call is resolved at compile time based on the declared type of the variable that the method is called on.

The choice between dynamic and static dispatch depends on the specific use case and performance considerations. Dynamic dispatch provides flexibility and allows for polymorphic behavior, while static dispatch provides faster method calls and better performance.