map_tie

Synopsis

template <typename K0, typename K1,... typename KN, typename D0, typename D1,... typename DN>
struct map_tie;

The variadic function accepts 0 to FUSION_MAX_MAP_SIZE elements, where FUSION_MAX_MAP_SIZE is a user definable predefined maximum that defaults to 10. You may define the preprocessor constant FUSION_MAX_MAP_SIZE before including any Fusion header to change the default. Example:

#define FUSION_MAX_MAP_SIZE 20

Parameters

Parameter	Requirement	Description
`K0, K1,... KN`	Any type	The key types for `map_tie`
`D0, D1,... DN`	Any type	The arguments types for `map_tie`

Expression Semantics

result_of::map_tie<K0, K1,... KN, D0, D1,... DN>::type;

Return type: map<pair<K0, D0&>, pair<K1, D1&>,... pair<KN, DN&> >

Semantics: Create a map of references from D0, D1,... DN with keys K0, K1,... KN

Header

#include <boost/fusion/container/generation/map_tie.hpp>
#include <boost/fusion/include/map_tie.hpp>

Example

struct int_key;
struct double_key;
...
result_of::map_tie<int_key, double_key, int, double>::type