Sprout/source/libs/string/basic_string/rbegin.rst

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.. _sprout-string-basic_string-rbegin:
###############################################################################
rbegin
###############################################################################
Interface
========================================
.. sourcecode:: c++
reverse_iterator rbegin() SPROUT_NOEXCEPT;
SPROUT_CONSTEXPR const_reverse_iterator rbegin() const SPROUT_NOEXCEPT;
Returns
========================================
| reverse iterator for the first element of reverse iteration.
Examples
========================================
.. sourcecode:: c++
#include <sprout/string.hpp>
using namespace sprout;
SPROUT_STATIC_CONSTEXPR auto input = string<8>("homuhomu");
static_assert(*input.rbegin() == 'u', "input first element of reverse iteration is u.");
Complexity
========================================
| Recursive function invocations in *O(1)* (constant) depth.
Header
========================================
| ``sprout/string/string.hpp``
| Convenience header: ``sprout/string.hpp``