1.1 KiB
1.1 KiB
[forward.list.iter]
23 Containers library [containers]
23.3 Sequence containers [sequences]
23.3.7 Class template forward_list [forward.list]
23.3.7.3 Iterators [forward.list.iter]
constexpr iterator before_begin() noexcept; constexpr const_iterator before_begin() const noexcept; constexpr const_iterator cbefore_begin() const noexcept;
Effects: cbefore_begin() is equivalent toconst_cast<forward_list const&>(*this).before_begin().
Returns: A non-dereferenceable iterator that, when incremented, is equal to the iterator returned by begin().
Remarks: before_begin() == end() shall equal false.