I was going over a cpp con video, and I couldn't understand how it worked. I understand what it is doing, but now how. I haven't seen these syntaxes before.
template<class T> inline void
allocator<T>::construct(pointer p, T const& val)
{
::new((void*) p) T(val);
}
The allocator decouples memory allocation and object creation, (unlike the new operator). So this is the construction part. So to construct an object a reference to an already constructed T object is necessary. That seems circular.
What is the ::new((void*) p) T(val); line doing ?
Also what is inline void doing ?
Where can I learn more about things like this in C++ ?
