The Go linter go-printf-func-name checks that printf-like functions are named with f at the end.

myLog should be named myLogf by Go convention:

package main import "log" func myLog(format string, args ...interface{}) { const prefix = "[my] " log.Printf(prefix + format, args...) }

$ go vet -vettool=$(which go-printf-func-name) ./... ./main.go:5:1: printf-like formatting function 'myLog' should be named 'myLogf'