Is it safe for more than one goroutine to print to stdout?

Question

I have multiple goroutines in my program, each of which makes calls to fmt.Println without any explicit synchronization. Is this safe (i.e., will each line appe

Answer 1

The common methods (fmt.printLine) are not safe. However, there are methods that are.

log.Logger is "goroutine safe": https://golang.org/pkg/log/#Logger

Something like this will create a stdout logger that can be used from any go routine safely.

logger := log.New(os.Stdout, "", 0)