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## Function template all_of_equal

boost::algorithm::all_of_equal

## Synopsis

    // In header: <boost/algorithm/cxx11/all_of.hpp>

    template<typename Range, typename T>
      BOOST_CXX14_CONSTEXPR bool all_of_equal(const Range & r, const T & val);

## Description

| Note
returns true on an empty range

Parameters: |
`r` | The input range
`val` | A value to compare against
Returns: | true if all elements in the range are equal to 'val'