I'm hoping that this isn't an utterly ignorant question, but I can't seem to find any information on a few snippets of code I've been coming across.
Instead of describing it, I'll just give an example:
auto x = reinterpret_cast<T*>(something->data * sizeof(T));
myResult = std::move(*x);
x->~T();
Note that this code exists within a template class, hence the T.
I have a general understanding of reinterpret_cast<> and std::move(). However, I don't quite understand what the statement x->~T() means. Being more familiar with C, I thought it was a logical not of the returned value of <datatype>(). Looking at the syntax though, it makes more sense - to me at least - that it's a destructor of some sorts.
If anyone could shed some light on this, it would be appreciated.
It's an explicit destructor, and it's is usually used in conjunction with placement new. Placement new overlays an object (instantiates an object) in memory that had been pre-allocated, and calls the constructor thereafter(see wiki article).