迭代器访问概念

• 可读迭代器
• 可写迭代器
• 可交换迭代器
• 左值迭代器

迭代器遍历概念

• 可增量迭代器
• 单次遍历迭代器
• 前向遍历
• 双向遍历
• 随机访问遍历

iterator_concepts.hpp提要

namespace boost_concepts {

    // Iterator Access Concepts

    template <typename Iterator>
    class ReadableIteratorConcept;

    template <
        typename Iterator
      , typename ValueType = std::iterator_traits<Iterator>::value_type
    >
    class WritableIteratorConcept;

    template <typename Iterator>
    class SwappableIteratorConcept;

    template <typename Iterator>
    class LvalueIteratorConcept;

    // Iterator Traversal Concepts

    template <typename Iterator>
    class IncrementableIteratorConcept;

    template <typename Iterator>
    class SinglePassIteratorConcept;

    template <typename Iterator>
    class ForwardTraversalConcept;

    template <typename Iterator>
    class BidirectionalTraversalConcept;

    template <typename Iterator>
    class RandomAccessTraversalConcept;

    // Interoperability

    template <typename Iterator, typename ConstIterator>
    class InteroperableIteratorConcept;

}