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21 Strings library [strings]

21.4 String view classes [string.view]

21.4.3 Deduction guide [string.view.deduct]

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template<class It, class End> basic_string_view(It, End) -> basic_string_view<iter_value_t<It>>;
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Constraints:
  • (1.1)
    It satisfies contiguous_­iterator.
  • (1.2)
    End satisfies sized_­sentinel_­for<It>.