Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
template<class SinglePassRange, class UnaryPredicate> typename range_iterator<SinglePassRange>::type find_if(SinglePassRange& rng, UnaryPredicate pred); template< range_return_value re, class SinglePassRange, class UnaryPredicate > typename range_return<SinglePassRange, re>::type find_if(SinglePassRange& rng, UnaryPredicate pred);
The versions of find_if
that return an iterator, returns the first iterator in the range rng such that pred(*i) is true.
end(rng)
is returned if no such iterator exists.
The versions of find_if
that return a range_return,
defines found in the same manner as the returned iterator described above.
Defined in the header file boost/range/algorithm/find_if.hpp
SinglePassRange is
a model of the Single
Pass Range Concept.
UnaryPredicate is
a model of the PredicateConcept.
SinglePassRange
is convertible to the argument type of UnaryPredicate.
For each iterator i in
rng, *i is in the domain of UnaryPredicate.
Linear. At most distance(rng) invocations of pred.