vector.hpp

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

            if (size > N)
                // Raising exceptions abstracted as requested during review.
                // throw std::bad_alloc ();
                bad_size ().raise ();
            // The content of the array is intentionally not copied.
            size_ = size;
        }

        // Element access
        BOOST_UBLAS_INLINE
        const_reference operator () (size_type i) const {
            BOOST_UBLAS_CHECK (i < size_,  bad_index ());
            return data_ [i];
        }
        BOOST_UBLAS_INLINE
        reference operator () (size_type i) {
            BOOST_UBLAS_CHECK (i < size_, bad_index ());
            return data_ [i];
        }

        BOOST_UBLAS_INLINE
        const_reference operator [] (size_type i) const {
            return (*this) (i);
        }
        BOOST_UBLAS_INLINE
        reference operator [] (size_type i) {
            return (*this) (i);
        }

        // Assignment
        BOOST_UBLAS_INLINE
        c_vector &operator = (const c_vector &v) {
            // Precondition for container relaxed as requested during review.
            // BOOST_UBLAS_CHECK (size_ == v.size_, bad_size ());
            size_ = v.size_;
            std::copy (v.data_, v.data_ + v.size_, data_);
            return *this;
        }
        BOOST_UBLAS_INLINE
        c_vector &assign_temporary (c_vector &v) {
            swap (v);
            return *this;
        }
        template<class AE>
        BOOST_UBLAS_INLINE
        c_vector &operator = (const vector_expression<AE> &ae) {
#ifdef BOOST_UBLAS_MUTABLE_TEMPORARY
            return assign_temporary (self_type (ae));
#else
            // return assign (self_type (ae));
            self_type temporary (ae);
            return assign_temporary (temporary);
#endif
        }
        template<class AE>
        BOOST_UBLAS_INLINE
        c_vector &reset (const vector_expression<AE> &ae) {
            self_type temporary (ae);
            resize (temporary.size (), false);
            return assign_temporary (temporary);
        }
        template<class AE>
        BOOST_UBLAS_INLINE
        c_vector &assign (const vector_expression<AE> &ae) {
            vector_assign (scalar_assign<reference, BOOST_UBLAS_TYPENAME AE::value_type> (), *this, ae);
            return *this;
        }
        template<class AE>
        BOOST_UBLAS_INLINE
        c_vector &operator += (const vector_expression<AE> &ae) {
#ifdef BOOST_UBLAS_MUTABLE_TEMPORARY
            return assign_temporary (self_type (*this + ae));
#else
            // return assign (self_type (*this + ae));
            self_type temporary (*this + ae);
            return assign_temporary (temporary);
#endif
        }
        template<class AE>
        BOOST_UBLAS_INLINE
        c_vector &plus_assign (const vector_expression<AE> &ae) {
            vector_assign (scalar_plus_assign<reference, BOOST_UBLAS_TYPENAME AE::value_type> (), *this, ae);
            return *this;
        }
        template<class AE>
        BOOST_UBLAS_INLINE
        c_vector &operator -= (const vector_expression<AE> &ae) {
#ifdef BOOST_UBLAS_MUTABLE_TEMPORARY
            return assign_temporary (self_type (*this - ae));
#else
            // return assign (self_type (*this - ae));
            self_type temporary (*this - ae);
            return assign_temporary (temporary);
#endif
        }
        template<class AE>
        BOOST_UBLAS_INLINE
        c_vector &minus_assign (const vector_expression<AE> &ae) {
            vector_assign (scalar_minus_assign<reference, BOOST_UBLAS_TYPENAME AE::value_type> (), *this, ae);
            return *this;
        }
        template<class AT>
        BOOST_UBLAS_INLINE
        c_vector &operator *= (const AT &at) {
            vector_assign_scalar (scalar_multiplies_assign<reference, AT> (), *this, at);
            return *this;
        }
        template<class AT>
        BOOST_UBLAS_INLINE
        c_vector &operator /= (const AT &at) {
            vector_assign_scalar (scalar_divides_assign<reference, AT> (), *this, at);
            return *this;
        }

        // Swapping
        BOOST_UBLAS_INLINE
        void swap (c_vector &v) {
            // Too unusual semantic.
            // BOOST_UBLAS_CHECK (this != &v, external_logic ());
            if (this != &v) {
                BOOST_UBLAS_CHECK (size_ == v.size_, bad_size ());
                std::swap (size_, v.size_);
                std::swap_ranges (data_, data_ + size_, v.data_);
            }
        }
#ifndef BOOST_UBLAS_NO_MEMBER_FRIENDS
        BOOST_UBLAS_INLINE
        friend void swap (c_vector &v1, c_vector &v2) {
            v1.swap (v2);
        }
#endif

        // Element insertion and erasure
        BOOST_UBLAS_INLINE
        void insert (size_type i, const_reference t) {
            BOOST_UBLAS_CHECK (i < size_, bad_index ());
            BOOST_UBLAS_CHECK (data_ [i] == value_type (), bad_index ());
            data_ [i] = t;
        }
        BOOST_UBLAS_INLINE
        void erase (size_type i) {
            BOOST_UBLAS_CHECK (i < size_, bad_index ());
            data_ [i] = value_type ();
        }
        BOOST_UBLAS_INLINE
        void clear () {
            std::fill (data_, data_ + size_, value_type ());
        }

#ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR
        typedef indexed_iterator<self_type, dense_random_access_iterator_tag> iterator;
        typedef indexed_const_iterator<self_type, dense_random_access_iterator_tag> const_iterator;
#else
        class const_iterator;
        class iterator;
#endif

        // Element lookup
        BOOST_UBLAS_INLINE
        const_iterator find (size_type i) const {
#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
            return const_iterator (*this, &data_ [i]);
#else
            return const_iterator (*this, i);
#endif
        }
        BOOST_UBLAS_INLINE
        iterator find (size_type i) {
#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
            return iterator (*this, &data_ [i]);
#else
            return iterator (*this, i);
#endif
        }

        // Iterators simply are pointers.

#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
        class const_iterator:
            public container_const_reference<c_vector>,
            public random_access_iterator_base<dense_random_access_iterator_tag,
                                               const_iterator, value_type> {
        public:
            typedef dense_random_access_iterator_tag iterator_category;
#ifdef BOOST_MSVC_STD_ITERATOR
            typedef const_reference reference;
#else
            typedef typename c_vector::difference_type difference_type;
            typedef typename c_vector::value_type value_type;
            typedef typename c_vector::const_reference reference;
            typedef typename c_vector::const_pointer pointer;
#endif

            // Construction and destruction
            BOOST_UBLAS_INLINE
            const_iterator ():
                container_const_reference<self_type> (), it_ () {}
            BOOST_UBLAS_INLINE
            const_iterator (const self_type &v, const const_iterator_type &it):
                container_const_reference<self_type> (v), it_ (it) {}
            BOOST_UBLAS_INLINE
#ifndef BOOST_UBLAS_QUALIFIED_TYPENAME
            const_iterator (const iterator &it):
#else
            const_iterator (const typename self_type::iterator &it):
#endif
                container_const_reference<self_type> (it ()), it_ (it.it_) {}

            // Arithmetic
            BOOST_UBLAS_INLINE
            const_iterator &operator ++ () {
                ++ it_;
                return *this;
            }
            BOOST_UBLAS_INLINE
            const_iterator &operator -- () {
                -- it_;
                return *this;
            }
            BOOST_UBLAS_INLINE
            const_iterator &operator += (difference_type n) {
                it_ += n;
                return *this;
            }
            BOOST_UBLAS_INLINE
            const_iterator &operator -= (difference_type n) {
                it_ -= n;
                return *this;
            }
            BOOST_UBLAS_INLINE
            difference_type operator - (const const_iterator &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it_ - it.it_;
            }

            // Dereference
            BOOST_UBLAS_INLINE
            reference operator * () const {
                BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ());
                return *it_;
            }

            // Index
            BOOST_UBLAS_INLINE
            size_type index () const {
                const self_type &v = (*this) ();
                return it_ - v.begin ().it_;
            }

            // Assignment
            BOOST_UBLAS_INLINE
            const_iterator &operator = (const const_iterator &it) {
                container_const_reference<self_type>::assign (&it ());
                it_ = it.it_;
                return *this;
            }

            // Comparison
            BOOST_UBLAS_INLINE
            bool operator == (const const_iterator &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it_ == it.it_;
            }
            BOOST_UBLAS_INLINE
            bool operator < (const const_iterator &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it_ < it.it_;
            }

        private:
            const_iterator_type it_;

            friend class iterator;
        };
#endif

        BOOST_UBLAS_INLINE
        const_iterator begin () const {
            return find (0);
        }
        BOOST_UBLAS_INLINE
        const_iterator end () const {
            return find (size_);
        }

#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
        class iterator:
            public container_reference<c_vector>,
            public random_access_iterator_base<dense_random_access_iterator_tag,
                                               iterator, value_type> {
        public:
            typedef dense_random_access_iterator_tag iterator_category;
#ifndef BOOST_MSVC_STD_ITERATOR
            typedef typename c_vector::difference_type difference_type;
            typedef typename c_vector::value_type value_type;
            typedef typename c_vector::reference reference;
            typedef typename c_vector::pointer pointer;
#endif

            // Construction and destruction
            BOOST_UBLAS_INLINE
            iterator ():
                container_reference<self_type> (), it_ () {}
            BOOST_UBLAS_INLINE
            iterator (self_type &v, const iterator_type &it):
                container_reference<self_type> (v), it_ (it) {}

            // Arithmetic
            BOOST_UBLAS_INLINE
            iterator &operator ++ () {
                ++ it_;
                return *this;
            }
            BOOST_UBLAS_INLINE
            iterator &operator -- () {
                -- it_;
                return *this;
            }
            BOOST_UBLAS_INLINE
            iterator &operator += (difference_type n) {
                it_ += n;
                return *this;
            }
            BOOST_UBLAS_INLINE
            iterator &operator -= (difference_type n) {
                it_ -= n;
                return *this;
            }
            BOOST_UBLAS_INLINE
            difference_type operator - (const iterator &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it_ - it.it_;
            }

            // Dereference
            BOOST_UBLAS_INLINE
            reference operator * () const {
                BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ());
                return *it_;
            }

            // Index
            BOOST_UBLAS_INLINE
            size_type index () const {
                self_type &v = (*this) ();
                return it_ - v.begin ().it_;
            }

            // Assignment
            BOOST_UBLAS_INLINE
            iterator &operator = (const iterator &it) {
                container_reference<self_type>::assign (&it ());
                it_ = it.it_;
                return *this;
            }

            // Comparison
            BOOST_UBLAS_INLINE
            bool operator == (const iterator &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it_ == it.it_;
            }
            BOOST_UBLAS_INLINE
            bool operator < (const iterator &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it_ < it.it_;
            }

        private:
            iterator_type it_;

            friend class const_iterator;
        };
#endif

        BOOST_UBLAS_INLINE
        iterator begin () {
            return find (0);
        }
        BOOST_UBLAS_INLINE
        iterator end () {
            return find (size_);
        }

        // Reverse iterator

#ifdef BOOST_MSVC_STD_ITERATOR
        typedef reverse_iterator_base<const_iterator, value_type, const_reference> const_reverse_iterator;
#else
        typedef reverse_iterator_base<const_iterator> const_reverse_iterator;
#endif

        BOOST_UBLAS_INLINE
        const_reverse_iterator rbegin () const {
            return const_reverse_iterator (end ());
        }
        BOOST_UBLAS_INLINE
        const_reverse_iterator rend () const {
            return const_reverse_iterator (begin ());
        }

#ifdef BOOST_MSVC_STD_ITERATOR
        typedef reverse_iterator_base<iterator, value_type, reference> reverse_iterator;
#else
        typedef reverse_iterator_base<iterator> reverse_iterator;
#endif

        BOOST_UBLAS_INLINE
        reverse_iterator rbegin () {
            return reverse_iterator (end ());
        }
        BOOST_UBLAS_INLINE
        reverse_iterator rend () {
            return reverse_iterator (begin ());
        }

    private:
        size_type size_;
        value_type data_ [N];
    };

}}}

#endif