On Tue, Jul 21, 2015 at 12:49 PM Gunnar Roth <gunnar.r...@gmx.de> wrote:
>
> >
> > void push_back(T &&t) {
> > ensureCapacity(size() + 1);
> > new (m_end) T(std::move(t)); // move-construct
> from t
> > ++m_end;
> why is std::move needed here? Afaik std::move(t) converts t into a rvalue
> ref, but t is already an r-value ref.
>
The rule of thumb is if you can get the address of the object, then it is
an l-value. It may be an r-value going into the function but once in the
function, you can get its address. You need to use std::move to treat data
as an r-value again.
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