BOOST_FUSION_ADAPT_ASSOC_STRUCT

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### BOOST_FUSION_ADAPT_ASSOC_STRUCT

##### Description

BOOST_FUSION_ADAPT_ASSOC_STRUCT is a macro that can be used to generate all the necessary boilerplate to make an arbitrary struct a model of Random Access Sequence and Associative Sequence.

##### Synopsis

    BOOST_FUSION_ADAPT_ASSOC_STRUCT(
        struct_name,
        ([member_type0,] member_name0, key_type0)
        ([member_type1,] member_name1, key_type1)
        ...
        )

##### Semantics

The above macro generates the necessary code to adapt `struct_name` as a model of Random Access Sequence and Associative Sequence. The sequence of `([member_typeN,] member_nameN, key_typeN)` tuples declares the type, name and key type of each of the struct members that are part of the sequence.

When member_typeN is omitted or set to auto, the type is infered with Boost.TypeOf.

The macro should be used at global scope, and `struct_name` should be the fully namespace qualified name of the struct to be adapted.

##### Header

    #include <boost/fusion/adapted/struct/adapt_assoc_struct.hpp>
    #include <boost/fusion/include/adapt_assoc_struct.hpp>

##### Example

    namespace demo
    {
        struct employee
        {
            std::string name;
            int age;
        };
    }

    namespace keys
    {
        struct name;
        struct age;
    }

    // demo::employee is now a Fusion sequence.
    // It is also an associative sequence with
    // keys keys::name and keys::age present.
    BOOST_FUSION_ADAPT_ASSOC_STRUCT(
        demo::employee,
        (name, keys::name)
        (age, keys::age))

    // Without BOOST_PP_VARIADICS support :
    BOOST_FUSION_ADAPT_ASSOC_STRUCT(
        demo::employee,
        (auto, name, keys::name),
        (auto, age, keys::name))