const net.hexDigit

8 uses

	net (current package)
		dnsclient.go#L43: 		buf = append(buf, hexDigit[v&0xF],
		dnsclient.go#L45: 			hexDigit[v>>4],
		ip.go#L364: 		s[i*2], s[i*2+1] = hexDigit[tn>>4], hexDigit[tn&0xf]
		mac.go#L7: const hexDigit = "0123456789abcdef"
		mac.go#L21: 		buf = append(buf, hexDigit[b>>4])
		mac.go#L22: 		buf = append(buf, hexDigit[b&0xF])
		parse.go#L209: 			dst = append(dst, hexDigit[v&0xf])