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 ^[13] 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

^[13] map is implemented in terms of the vector. That is why we reuse FUSION_MAX_VECTOR_SIZE