validateIsEmpty function
check if the value is empty or not
when value is null or value length is zero, it will return true
when excludeWhiteSpace is true all white space will
be replaced by string empty
Implementation
bool validateIsEmpty({
String? value,
bool excludeWhiteSpace = true,
}) {
if (value == null) {
return true;
}
if (excludeWhiteSpace) {
value = value.removeWhiteSpace();
}
return value.isEmpty;
}