On Saturday, 13 February 2016 at 20:39:22 UTC, rsw0x wrote:
It's not move semantics, it enables move semantics.
Yes, C++ compilers do it(Walter 'invented' it, fyi) but C++
doesn't guarantee it. D (is supposed) to) guarantee it, which
enables move semantics.
I understand what you mean. You mean construction of read/write
protected objects, which you can override with dedicated
functions with special privileges. But you can do that in old C++
as well... You only need to create your own reference type.
Of course, there is not much to invent as the common C paradigm
for objects has always been that kind of initialization which RVO
"emulates":
data_t data; initialize_data(&data);
The primary difference is that C does not provide any protection
for the data. The issue in C++ is that it is not an optimization,
as it breaks the language semantics (which the standard now
allows).
