...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Finds the first element of a given type within a sequence.
template< typename T, typename Sequence > unspecified find(Sequence const& seq); template< typename T, typename Sequence > unspecified find(Sequence& seq);
Table 1.53. Parameters
Parameter |
Requirement |
Description |
---|---|---|
|
A model of Forward Sequence |
The sequence to search |
|
Any type |
The type to search for |
find
<T>(seq)
Return type: A model of the same iterator
category as the iterators of seq
.
Semantics: Returns an iterator to the
first element of seq
of type T
, or
if there is no such element. Equivalent
to end
(seq)find_if
<boost::is_same<_, T> >(seq)
Linear. At most
comparisons.
result_of::size
<Sequence>::value
#include <boost/fusion/algorithm/query/find.hpp> #include <boost/fusion/include/find.hpp>
constvector
<char,int> vec('a','0'); assert(*find
<int>(vec) == '0'); assert(find
<double>(vec) ==end
(vec));