学步园

也叫数组的外包装，来自《C++标准程序库》：

#include <cstddef></p> <p>template<class T, std::size_t thesize><br /> class carray {<br /> private:<br /> T v[thesize];<br /> public:<br /> typedef T value_type;<br /> typedef T* iterator;<br /> typedef const T* const_iterator;<br /> typedef T& reference;<br /> typedef const T& const_reference;<br /> typedef std::size_t size_type;<br /> typedef std::ptrdiff_t difference_type;</p> <p> iterator begin() {<br /> return v;<br /> }<br /> const_iterator begin() const {<br /> return v;<br /> }</p> <p> iterator end() {<br /> return v + thesize;<br /> }<br /> const_iterator end() const {<br /> return v + thesize;<br /> }</p> <p> reference operator[](std::size_t i) {<br /> return v[i];<br /> }</p> <p> const_reference operator[](std::size_t i) const {<br /> return v[i];<br /> }</p> <p> size_type size() const {<br /> return thesize;<br /> }</p> <p> size_type max_size() const {<br /> return thesize;<br /> }</p> <p> T* as_array() {<br /> return v;<br /> }<br /> };