...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
A metafunction returning the result type of all.
template< typename Sequence, typename F > struct all { typedef bool type; };
Table 1.47. Parameters
Parameter |
Requirement |
Description |
---|---|---|
Sequence |
A model of Forward Sequence |
Operation's argument |
F |
A model of unary Polymorphic Function Object |
Operation's argument |
result_of::all<Sequence, F>::type
Return type: bool.
Semantics: Returns the return type of all given a sequence of type Sequence and a unary Polymorphic Function Object of type F. The return type is always bool.
Constant.
#include <boost/fusion/algorithm/query/all.hpp> #include <boost/fusion/include/all.hpp>