type fmt.Scanner

5 uses

	fmt (current package)
		scan.go#L55: type Scanner interface {
		scan.go#L957: 	if v, ok := arg.(Scanner); ok {

	math/big
		floatconv.go#L293: var _ fmt.Scanner = (*Float)(nil) // *Float must implement fmt.Scanner
		intconv.go#L233: var _ fmt.Scanner = intOne // *Int must implement fmt.Scanner
		ratconv.go#L22: var _ fmt.Scanner = &ratZero // *Rat must implement fmt.Scanner