[#BloombergLP-bdlf-Bind_FuncTraits]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlf.adoc[bdlf]::Bind_FuncTraits
:relfileprefix: ../../
:mrdocs:

This `struct` provides traits of the binder functor type `t_FUNC`.

== Synopsis

Declared in `<bdlf_bind.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_RET,
    class t_FUNC>
struct Bind_FuncTraits
    : xref:BloombergLP/bdlf/Bind_FuncTraitsImp-05.adoc[Bind_FuncTraitsImp<t_RET, t_FUNC, (int)bslmf::IsFunctionPointer<t_FUNC *>::value, (int)bslmf::IsFunctionPointer<t_FUNC>::value, (int)bslmf::IsMemberFunctionPointer<t_FUNC>::value>]
----

== Description

If `t_RET` is `bslmf::Nil`, then the return type is inferred by using either `bslmf::FunctionPointerTraits`, `bslmf::MemberFunctionPointerTraits`, or `t_FUNC::ResultType` / `t_FUNC::result_type`. Otherwise the return type is `t_RET`. Additional nested types and enumerations describe whether binding is explicit, whether the functor is a member function, and whether it has pointer semantics.

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:BloombergLP/bdlf/Bind_FuncTraitsImp-05.adoc[Bind_FuncTraitsImp<t_RET, t_FUNC, (int)bslmf::IsFunctionPointer<t_FUNC *>::value, (int)bslmf::IsFunctionPointer<t_FUNC>::value, (int)bslmf::IsMemberFunctionPointer<t_FUNC>::value>]`
| Implementation traits for binder function‐object types.
|===


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