.. _sprout-algorithm-all_of_equal:

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all_of_equal
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Interface
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.. sourcecode:: c++

  template<typename InputIterator, typename T>
  inline SPROUT_CONSTEXPR bool
  all_of_equal(InputIterator first, InputIterator last, T const& value);

Returns
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| true if [first,last) is empty or if ``*i == value`` is true for every iterator i in the range [first,last), and false otherwise.

Examples
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.. sourcecode:: c++

  #include <sprout/algorithm/all_of_equal.hpp>
  #include <sprout/array.hpp>
  #include <sprout/container.hpp>
  using namespace sprout;

  SPROUT_STATIC_CONSTEXPR auto input = array<int, 10>{{1, 1, 1, 1, 1, 1, 1, 1, 1, 1}};
  SPROUT_STATIC_CONSTEXPR auto result = sprout::all_of_equal(begin(input), end(input), 1);
  static_assert(result, "all 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/all_of_equal.hpp``
| Convenience header: ``sprout/algorithm.hpp``