addZeroPrefix method

String? addZeroPrefix()

Adds a zero prefix to a single-digit number.

print(5.addZeroPrefix()); // Output: "05"
print(10.addZeroPrefix()); // Output: "10"

Implementation

String? addZeroPrefix() {
  if (isNull()) {
    return null;
  }
  if ((this ?? 0) < 10) {
    return '0$this';
  } else {
    return toString();
  }
}