[#BloombergLP-bdlf-Bind_MapParameter-0f]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlf.adoc[bdlf]::Bind_MapParameter
:relfileprefix: ../../
:mrdocs:

This meta‐function is used to select the type at `t_OFFSET` positions of the `t_INDEX` position in an argument list type `t_FUNC_ARGS`, which is of type `bslmf::TypeList` denoting the arguments of `t_FUNC`. Note that this class is used by `Bind_ImplExplicit`.

== Synopsis

Declared in `<bdlf_bind.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_FUNC,
    class t_ARG_TUPLE,
    int INDEX,
    int OFFSET>
struct Bind_MapParameter;
----

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlf/Bind_MapParameter-0f/Type.adoc[`Type`] 
| Forwarding type for the bound argument at position `t_INDEX`.
|===


== Specializations

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlf/Bind_MapParameter-04.adoc[`Bind_MapParameter<t_FUNC, t_FUNC_ARGS, 1, 1>`] 
| This partial specialization of `Bind_MapParameter` is intended for use with member functions. The `Bind_MemFnObjectWrapper` will properly wrap around the class object reference or pointer, such that either can be used to invoke the member function.
| xref:BloombergLP/bdlf/Bind_MapParameter-0b.adoc[`Bind_MapParameter<t_FUNC, t_FUNC_ARGS, 0, t_IS_MEMBER_OFFSET>`] 
| This partial specialization of `Bind_MapParameter` does not specify any type in the `t_FUNC_ARGS` list. It is used for parameters that should be ignored.
|===



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