fmt

func Append(b []byte, a ...any) []byte

func Appendf(b []byte, format string, a ...any) []byte

func Appendln(b []byte, a ...any) []byte

func Errorf(format string, a ...any) error

func FormatString(state fmt.State, verb rune) string

func Print(a ...interface{}) (n int, err error)

func Printf(format string, a ...interface{}) (n int, err error)

func Println(a ...interface{}) (n int, err error)

func SetStderr(out io.Writer)

func SetStdout(out io.Writer)

func Sprint(a ...any) string

func Sprintf(format string, a ...any) string

func Sprintln(a ...any) string