What is the difference between message-passing and method-invocation?

Question

Is there a difference between message-passing and method-invocation, or can they be considered equivalent? This is probably specific to the language; many languages don\'t suppo

Answer 1

Is there a difference between message-passing and method-invocation, or can they be considered equivalent?

They're similar. Some differences:

Messages can be passed synchronously or asynchronously (e.g. the difference between SendMessage and PostMessage in Windows)

You might send a message without knowing exactly which remote object you're sending it to

The target object might be on a remote machine or O/S.