[#BloombergLP-bslmf-IsNil-04]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmf.adoc[bslmf]::IsNil
:relfileprefix: ../../
:mrdocs:

Metafunction that is `true` for `Nil` and `false` for all other types.

== Synopsis

Declared in `<bslmf_nil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_T>
struct IsNil
    : xref:bsl/false_type.adoc[bsl::false_type]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:bsl/false_type.adoc[bsl::false_type]`
| Metafunction representing the boolean constant `false`.
|===

== Specializations

[cols="1"]
|===
| Name
| xref:BloombergLP/bslmf/IsNil-09.adoc[`IsNil<Nil>`] 
|===



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