Treatment checkedAdd
std/ops/num::checkedAdd
Generics
◻ N: CheckedAdd
Inputs
⇥ a: Stream<N>
⇥ b: Stream<N>
Outputs
↦ sum: Stream<Option<N>>
Add values from two streams, checking if overflow occurs.
Values passed through a & b are added and send in sum.
This treatment outputs an option containing a + b, or none if result cause overflow in data type.