_S_copy_chars() [2/6]

template<typename _CharT, typename _Traits, typename _Alloc>

template<class _Iterator>

constexpr void std::basic_string< _CharT, _Traits, _Alloc >::_S_copy_chars ( _CharT * __p, _Iterator __k1, _Iterator __k2 )

inlinestaticconstexprprivate

Definition at line 487 of file basic_string.h.

        {
#if __cplusplus >= 201103L
        using _IterBase = decltype(std::__niter_base(__k1));
        if constexpr (__or_<is_same<_IterBase, _CharT*>,
                        is_same<_IterBase, const _CharT*>>::value)
          _S_copy(__p, std::__niter_base(__k1), __k2 - __k1);
#if __cpp_lib_concepts
        else if constexpr (requires {
                         requires contiguous_iterator<_Iterator>;
                         { std::to_address(__k1) }
                         -> convertible_to<const _CharT*>;
                       })
          {
            const auto __d = __k2 - __k1;
            (void) (__k1 + __d); // See P3349R1
            _S_copy(__p, std::to_address(__k1), static_cast<size_type>(__d));
          }
#endif
        else
#endif
        for (; __k1 != __k2; ++__k1, (void)++__p)
          traits_type::assign(*__p, static_cast<_CharT>(*__k1));
      }

Referenced by std::basic_string< _CharT >::_S_copy_chars(), and std::basic_string< _CharT >::_S_copy_chars().

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