std::ranges..._view::begin(3) C++ Standard Libary std::ranges..._view::begin(3) NAME std::ranges::chunk_by_view::begin - std::ranges::chunk_by_view::begin Synopsis constexpr /*iterator*/ begin(); (since C++23) Returns an iterator to the first element of the chunk_by_view. Equivalent to: ranges::iterator_t<V> iter; if (begin_.has_value()) iter = begin_.value(); else { iter = /*find_next*/(ranges::begin(base())); begin_ = iter; // caching } return /*iterator*/(*this, ranges::begin(base()), iter); The behavior is undefined if the underlying predicate pred_ does not contain a value. Parameters (none) Return value Iterator to the first element. Notes In order to provide the amortized constant-time complexity required by the range concept, this function caches the result within the data member begin_ (the name is for exposition only) for use on subsequent calls. Example This section is incomplete Reason: no example See also end returns an iterator or a sentinel to the end (C++23) (public member function) ranges::begin returns an iterator to the beginning of a range (C++20) (customization point object) Category: * Todo no example http://cppreference.com 2024.06.10 std::ranges..._view::begin(3)
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