Return the number of elements in the structure that compare equal to a given value.Given a Foldable structure xs and a value value, count returns an unsigned integral, or a Constant thereof, representing the number of elements of xs that compare equal to value. For this method to be well-defined, all the elements of the structure must be Comparable with the given value. More...
Louis Dionne 2013-2016 Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
