if, switch, goto / if statement / Essential Go
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package main
import "fmt"
func retVals(ok bool) (int, bool) {
return 5, ok
}
func main() {
a := 5
b := 5
if a == b {
fmt.Print("a is equal to b\n")
} else {
fmt.Print("a is not equal to b\n")
}
if n, ok := retVals(true); ok {
fmt.Print("ok is true, n: %d\n", n)
} else {
fmt.Print("ok is false, n: %d\n", n)
}
// n is only visible within if loop, so this would fail compilation
// fmt.Printf("n: %d\n", n)
}
Go
INFO