Method operator +

code/data-structures/matrix.cpp:12–14

    cols(other.cols), cnt(other.cnt), data(other.data) { }
  T& operator()(int i, int j) { return at(i, j); }
  matrix<T> operator +(const matrix& other) {
    matrix<T> res(*this); rep(i,0,cnt)
      res.data[i] += other.data[i]; return res; }
  matrix<T> operator -(const matrix& other) {
    matrix<T> res(*this); rep(i,0,cnt)
      res.data[i] -= other.data[i]; return res; }