fromHex function
Implementation
Uint8List fromHex(String data) {
if (data.startsWith("0x")) {
data = data.substring(2);
}
final result = Uint8List(data.length ~/ 2);
for (int i = 0; i < data.length; i += 2) {
result[i ~/ 2] = int.parse(data.substring(i, i + 2), radix: 16);
}
return result;
}