isOkAnd abstract method
Returns true
if the result is Ok
and the value matches the predicate f
Examples
Result<int, String> x = Ok(9);
expect(x.isOkAnd((int val) => val > 5), true);
expect(x.isOkAnd((int val) => val < 5), false);
Result<int, String> y = Err('An unexpected error occured');
expect(x.isOkAnd((_) => true), false);
Implementation
bool isOkAnd(bool Function(T value) f);