 
BasicMatrix
The BasicMatrix concept provides a minimalist interface for
accessing elements from a 2 dimensional table of values.
Refinement of
none
Notation
| {M,I,V} | The matrix, index, and values types that together model the BasicMatrix concept. | 
| A | An object of type M. | 
| i, j | Objects of type I. | 
Associated Types
none
Valid Expressions
| A[i][j] | Returns a reference to the element object stored at index (i,j) Return type: V& for mutable A or const V&
for constant A.
 | 
Complexity guarantees
Element access is constant time.
Concept Checking Class
  template <class M, class I, class V>
  struct BasicMatrixConcept
  {
    void constraints() {
      V& elt = A[i][j];
      const_constraints(A);
      ignore_unused_variable_warning(elt);
    }
    void const_constraints(const M& A) {
      const V& elt = A[i][j];
      ignore_unused_variable_warning(elt);
    }
    M A;
    I i, j;
  };