The official statement is here https://golang.org/doc/faq#unused_variables_and_imports Compiling methods details are slightly above.
On Sunday, June 26, 2016 at 3:15:15 PM UTC+2, Hotei wrote: > > > > On Saturday, June 25, 2016 at 3:34:57 PM UTC-4, Val wrote: >> >> Hello >> It seems that this code <https://play.golang.org/p/C5jbcieUS6> doesn't >> compile : >> >> func main() { >> var err error >> err = f() >> } >> >> *prog.go:8: err declared and not used* >> >> >> but this one <https://play.golang.org/p/Y5zc4sLbtE> does : >> >> func main() { >> var err error >> g := func() { >> err = f() >> } >> g() >> } >> >> Is the function binding regarded as a "use"? Or does escape analysis >> decide to not check too deep about never-read variables? >> >> Whether expected or not, I supposed this compiler behavior won't change, >> because of the Go1 compatibility promise. >> >> Cheers >> Val >> > > Assignment isn't "use". Doesn't matter if it's a function binding or just > x = 3, if you don't use the left side of your "=" later it's a compile > error. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
