Sprout/source/libs/algorithm/any_of_equal.rst
2013-08-30 14:02:02 +09:00

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.. _sprout-algorithm-any_of_equal:
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any_of_equal
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Interface
========================================
.. sourcecode:: c++
template<typename InputIterator, typename T>
inline SPROUT_CONSTEXPR bool
any_of_equal(InputIterator first, InputIterator last, T const& value);
Returns
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| false if [first,last) is empty or if there is no iterator i in the range [first,last) such that ``*i == value`` is true, and true otherwise.
Examples
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.. sourcecode:: c++
#include <sprout/algorithm/any_of_equal.hpp>
#include <sprout/array.hpp>
#include <sprout/container.hpp>
using namespace sprout;
SPROUT_STATIC_CONSTEXPR auto input = array<int, 10>{{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}};
SPROUT_STATIC_CONSTEXPR auto result = sprout::any_of_equal(begin(input), end(input), 1);
static_assert(result, "any of input is equal to 1.");
Complexity
========================================
| At most ``last - first`` applications of the predicate.
| Recursive function invocations in *O(logN)* (logarithmic) depth.
Header
========================================
| ``sprout/algorithm/any_of_equal.hpp``
| Convenience header: ``sprout/algorithm.hpp``