class OutOfRange: public std::exception {}; template class MyArray { public: MyArray() {} MyArray(const std::initializer_list& init) //initializer list constructor: MyArray<5, int> mya = {0, 1, 2, 3}; { for(int i(0); i concept_map Range> //no ' ' in >> { typedef T* range_iterator::type; typedef T value_type; //begin and end are correct }; /* * Describing how MyArray fulfills Container concept's restrictions, * so it can be used in standard algorithms efficiently */ template concept_map Container> { typedef T value_type; typedef T* iterator; typedef const T* const_iterator; typedef T& reference; typedef const T& const_reference; //... more types //begin, end correct bool empty() //array is always full -> never empty { return false; } unsigned size() //its size is always its maximum { return size; } unsigned max_size() { return size; } }

/* * Defining a concept so we can work with T as numbers * We reuse the LessThanComparable standard concept to reduce complexity */ auto concept Number { T operator+(const T&, const T&); T& operator+=(T&, const T&); //... }; /* * Type param fulfills Number concept */ template class Matrix { public: Matrix(unsigned row, unsigned col): row(row), col(col) { Create(); } /* * Rvalue constructor: efficient copying of temporaly objects */ Matrix(Matrix&& oth): row(oth.Row()), col(oth.Col()) { Create(); T** tmp = matr; matr = oth.matr; oth.matr = tmp; } ~Matrix() { for(int i(0); i void Apply(Func func) { for(int i(0); i

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