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std::ranges::join_with_view<V,Pattern>::join_with_view - cppreference.com

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join_with_view() requires std::default_initializable<V> && std::default_initializable<Pattern> = default;

 (1) (since C++23)

constexpr explicit join_with_view( V base, Pattern pattern );

 (2) (since C++23)

template< ranges::input_range R > requires std::constructible_from<V, views::all_t<R>> && std::constructible_from <Pattern, ranges::single_view <ranges::range_value_t</*InnerRng*/>>> constexpr explicit join_with_view ( R&& r, ranges::range_value_t</*InnerRng*/> e );

 (3) (since C++23)

Constructs a join_with_view, initializes the underlying view base_ and the stored pattern pattern_ .

 Overload  Data members
base_ pattern_
(1) value-initialized value-initialized
(2) initialized with std::move(base) initialized with std::move(pattern)
(3)  initialized with views::all(std::forward<R>(r))   initialized with views::single(std::move(e)) 

Parameters

base - a view of ranges to be flattened
pattern - view to be used as the delimiter
e - element to be used as the delimiter

Example