func MyFunc() error {
v, err := doSomething()
...
err := doAnotherthing()
}
That won't compile anyway; the second assignment would have to be
err = doAnotherthing()
See: https://play.golang.org/p/pvNC7YHI88j
I do find this rather annoying, to the point where I'll stick a "var err
error" at the top of a function rather than have the first assignment be
different to the subsequent ones. And yet, a single assignment is fine if
you use the assign-and-test form, since this introduces a new variable
which is only scoped to that block:
// This is OK
if err := doAnotherthing(); err != nil {
return err
}
See: https://play.golang.org/p/4NKmFoX7uj2
It is also possible to use named return values and a naked return, although
I get the impression this tends to be frowned upon.
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