20 General utilities library [utilities]

20.11 Smart pointers [smartptr]

20.11.1 Class template unique_­ptr [unique.ptr]

20.11.1.3 unique_­ptr for array objects with a runtime length [unique.ptr.runtime]

20.11.1.3.3 Observers [unique.ptr.runtime.observers]

T& operator[](size_t i) const;
Requires: i < the number of elements in the array to which the stored pointer points.
Returns: get()[i].