On Sunday, 29 October 2017 at 14:27:34 UTC, Ola Fosheim Grøstad
wrote:
On Sunday, 29 October 2017 at 11:23:19 UTC, Steven
Schveighoffer wrote:
So, what will the member function be called? «opElvis»? No…
opCast for bool.
That means you cannot create your own type-safe filtering
mechanism, but will be forced to provide opCast for bool.
That breaks down if you want do filter out invalid values where
zero is a valid value. For instance if you have an integer type
that tracks overflow:
calc(maybe_overflow_integer :? 0)
So casting to bool is a poor choice for the typical use context.
