Exit with error code in go?

Question

What\'s the idiomatic way to exit a program with some error code?

The documentation for Exit says \"The program terminates immediately; deferred functions a

Answer 1

As mentioned by fas, you have func Exit(exitcode int) from the os package.

However, if you need the defered function to be applied, you always can use the defer keyword like this:

http://play.golang.org/p/U-hAS88Ug4

You perform all your operation, affect a error variable and at the very end, when everything is cleaned up, you can exit safely.

Otherwise, you could also use panic/recover: http://play.golang.org/p/903e76GnQ-

When you have an error, you panic, end you cleanup where you catch (recover) it.