Boost C++ Libraries

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make_map
Description

Returns the result type of make_map.

Synopsis
template <
    typename K0, typename K1,... typename KN
  , typename T0, typename T1,... typename TN>
struct make_map;

The variadic function accepts 0 to FUSION_MAX_VECTOR_SIZE [12] elements, where FUSION_MAX_VECTOR_SIZE is a user definable predefined maximum that defaults to 10. You may define the preprocessor constant FUSION_MAX_VECTOR_SIZE before including any Fusion header to change the default. Example:

#define FUSION_MAX_VECTOR_SIZE 20
Parameters

Parameter

Requirement

Description

K0, K1,... KN

Any type

Keys associated with T0, T1,... TN

T0, T1,... TN

Any type

Data associated with keys K0, K1,... KN

Expression Semantics
resulf_of::make_map<K0, K1,... KN, T0, T1,... TN>::type;

Return type: result_of::make_map<K0, K0,... KN, T0, T1,... TN>::type

Semantics: A map with fusion::pair elements where the second_type is converted following the rules for element conversion.

Precondition: There may be no duplicate key types.

Header
#include <boost/fusion/container/generation/make_map.hpp>
#include <boost/fusion/include/make_map.hpp>
Example
result_of::make_map<int, double, char, double>::type
See also

fusion::pair



[12] map is implemented in terms of the vector. That is why we reuse FUSION_MAX_VECTOR_SIZE


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