On Wednesday, 22 July 2015 at 07:49:07 UTC, Kagamin wrote:
That's unsafe. Unsafe behavior should require a cast or
something like that.
Where is unsafety? Code is the same for 3 versions, it guarantees
immutability of data because it was checked for const(T) and
immutable(T).
How about this?
const(A) f(const(B) b);
auto constBack(R,P)(const R r, P p);
Then invoke:
B b;
A a = f(b).constBack(b);
So `f` takes const parameters and returns const result, you
feed the result to the function `constBack` with one of
parameters and it infers constness from that parameter and
casts the result to the inferred constness.
Sorry, I didn't quite get it. What is this example for?
