On Wednesday, 29 May 2013 at 13:44:15 UTC, Jakob Ovrum wrote:
On Wednesday, 29 May 2013 at 13:35:18 UTC, Maxim Fomin wrote:
It is not casting away const and it has nothing to do with
immutable, also this does not suffer from data was actually
immutable problem.
The data is not initially constructed by the local function,
it's clearly coming from somewhere else and there's no
guarantee that it's not returning a const view of immutable
data. The code is not limited to accepting const, of course,
and exhibits the same problem when the function returns
immutable data.
Unions are a convenience feature, it boils down to the same as
a cast and has the same problems (actually worse because the
conversion is not explicit).
If you accept const object as a parameter, then yes.
