A multi-dimensional vector based on a one-dimensional std::vector.

Intended to be used like static multi-dimensional arrays (T[N][M] or std::array<std::array<T, M>, N>) with the benefit of dynamic resizeability. While the number of dimensions is fixed at compile time, the size of each dimension can be changed at runtime. E.g. a 3D grid data storage can be resized in its width/height/depth according to changed parameters. The number of dimensions is not limited; the hypervector can be templated as 1D array, 2D grid, 3D cuboid, 4D hypercube, etc. Compared to a multi-dimensional std::vector (std::vector<std::vector<...<T>>>) the hypervector will use the one (pre-reserved) memory of its one-dimensional container without multiple (per dimension) allocations.

The interface is designed to resemble std::vector, except that some methods require a number of arguments according to the number of dimensions the hypervector was templated with:

• constructor()
• constructor(size_type dim0, size_type dim1, ... , const T& value)
• constructor(size_type dim0, size_type dim1, ... )
• void assign(size_type dim0, size_type dim1, ... , const T& value)
• void resize(size_type dim0, size_type dim1, ... )
• void resize(size_type dim0, size_type dim1, ... , const T& value)
• void reserve(size_type dim0, size_type dim1, ... )
• reference at(size_type dim0, size_type dim1, ... )
• operator[](size_t) returns views on subdimensions or slices that themselves can be sliced further up to individual storage elements

Implemented as C++11 variadic template.

Build test using CMake or $ g++ -o hypervector_test hypervector_test.cpp -std=c++11