constexpr auto begin(); | (1) | (since C++20) |
constexpr auto begin() const requires ranges::forward_range<V> && ranges::forward_range<const V>; | (2) | (since C++20) |
Returns an outer_iterator
to the first element of the lazy_split_view
.
Let base_
be the underlying view.
constexpr auto begin() { if constexpr (ranges::forward_range<V>) return /*outer_iterator*/</*simple_view*/<V>>{*this, ranges::begin(base_)}; else { current_ = ranges::begin(base_); return /*outer_iterator*/<false>{*this}; } }
return /*outer_iterator*/<true>{*this, ranges::begin(base_)};
.(none).
outer_iterator
to the first element.
(C++20) | returns an iterator or a sentinel to the end (public member function) |
(C++20) | returns an iterator to the beginning of a range (customization point object) |
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