Ok now I got they are in scope. About defer, could you think of it like defer makes a function into a function with multiple entry and exit points, possible to be stopped and resumed, like a coroutine?
Ehm, not sure I understood, but I'd say no. Defer is just code that is executed in reverse order upon return from a fuction. It has nothing to do with coroutines. It's a cleaner way to write the usual C syntax of "goto cleanup_x" code.
Go coroutines (goroutines) are functions invoked with the "go" keyword. These cannot be stopped or resumed, but might be (possibly) executed on a different thread. In any case, they are not guaranteed to be executed immediately in the normal flow of the code.
>Ehm, not sure I understood, but I'd say no. Defer is just code that is executed in reverse order upon return from a fuction.
I'd say more like the equivalent of a "finally" clause (or more) for your whole function.
Though not sure about the "executed in reverse order part" -- what's "in reverse order" about Defer? Except if you mean that multiple defers get executed "last seen first"...
Go coroutines (goroutines) are functions invoked with the "go" keyword. These cannot be stopped or resumed, but might be (possibly) executed on a different thread. In any case, they are not guaranteed to be executed immediately in the normal flow of the code.