[#BloombergLP-bslmf-InvokeResult_Index]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmf.adoc[bslmf]::InvokeResult&lowbar;Index
:relfileprefix: ../../
:mrdocs:

Metafunction helpers for deducing the return type of an expression&period;

== Synopsis

Declared in `&lt;bslmf&lowbar;invokeresult&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct InvokeResult&lowbar;Index;
----

== Enums

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslmf/InvokeResult_Index/_04enum.adoc[`Unnamed enum`] 
| Index tags mapping expression result types to `InvokeResult&lowbar;Type` specializations&period;
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslmf/InvokeResult_Index/fromVal-024.adoc[`fromVal`] 
| `fromVal` overloads
|===



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