boost::algorithm::none_of
// In header: <boost/algorithm/cxx11/none_of.hpp> template<typename InputIterator, typename Predicate> bool none_of(InputIterator first, InputIterator last, Predicate p);
returns true on an empty range
Parameters:
first
The start of the input sequence
last
One past the end of the input sequence
p
A predicate for testing the elements of the sequence
Returns:
true if none of the elements in [first, last) satisfy the predicate 'p'