[#BloombergLP-bslmf-InvokeResult_MemObjPtrImpDispatch-0a-checkLvalue-01]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmf.adoc[bslmf]::xref:BloombergLP/bslmf/InvokeResult_MemObjPtrImpDispatch-0a.adoc[InvokeResult&lowbar;MemObjPtrImpDispatch&lt;bslmf::VoidType&lt;decltype(InvokeResult&lowbar;ImpUtils&colon;&colon;myDeclval&lt;t&lowbar;ARGTYPE&gt;()&period;&ast;
                 InvokeResult&lowbar;ImpUtils&colon;&colon;myDeclval&lt;t&lowbar;FN&gt;())&gt;::type, true, false, t&lowbar;FN, t&lowbar;ARGTYPE&gt;]::checkLvalue
:relfileprefix: ../../../
:mrdocs:

Return `bslmf&colon;&colon;Tag&lt;true&gt;()` if the first argument is an lvalue&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:BloombergLP/bslmf/Tag-0b.adoc[bslmf::Tag&lt;true&gt;]
checkLvalue(
    &sol;&ast; implementation-defined &ast;&sol; arg,
    int unused);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *arg*
| expression whose value category is being tested
| *unused*
| literal `int` used to prefer this overload
|===


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