Function First

linalg/sparsematrix.hpp:135–135

    { return FlatArray<ColIdx> (firsti[i+1]-firsti[i], colnr+firsti[i]); }      

    size_t First (int i) const { return firsti[i]; }
    FlatArray<size_t> GetFirstArray () const  { return firsti; } 

    void FindSameNZE();