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Returns the result type of fold.
template< typename Sequence, typename State, typename F> struct fold { typedef unspecified type; };
Table 1.36. Parameters
|
Parameter |
Requirement |
Description |
|---|---|---|
|
|
A model of Forward Sequence |
The sequence to iterate |
|
|
Any type |
The initial state for the first application of |
|
|
|
The operation to be applied on forward traversal |
result_of::fold<Sequence, State, F>::type
Return type: Any type
Semantics: Returns the result of applying
fold to a sequence of
type Sequence, with an
initial state of type State
and binary function object or function pointer of type F.
Linear, exactly applications of result_of::size<Sequence>::valueF.
#include <boost/fusion/algorithm/iteration/fold.hpp> #include <boost/fusion/include/fold.hpp>