LyNullableStringIsInt constructor
LyNullableStringIsInt(
- String message
Validation that requires a string to be an integer.
If the value is not an integer, the message
is returned.
Example:
final validator = LyNullableStringIsInt('Invalid integer');
final result = validation('5.5');
print(result); // Invalid integer
Implementation
LyNullableStringIsInt(super.message);