On Sunday, 16 February 2014 at 02:41:36 UTC, Steven Schveighoffer
wrote:
inout does not know when the incoming data is mutable.
Effectively, inout is just like const, but has implications on
the return value.
-Steve
Yeah, but say you magically knew the data was mutable.
void logicalConstBump(T)(ref inout(T) t, string
originalMutability)
{
if (originalMutability == "mutable")
{
cast(T)t += 1;
}
else
{
assert(0);
}
}
Obviously this is extremely contrived, but inout is effectively
logical const here. Is there no way to know what the "original"
mutability of t is at compile-time?
