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copy
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## copy

### Function Details

    static T* copy(T *seq1, const T *seq2,
        size_t cnt)

Copy first cnt number of elements from seq2 to seq1.

### Group: Interface compatible with std::string's char_traits.

Following are char_traits funcitons, which make this class char_traits compatiable, so that it can be used in std::basic_string template, and be manipulated by the c++ stl algorithms.

### Class

DbstlElemTraits

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