[#std-hash-0c3]
= xref:std.adoc[std]::hash<xref:folly/not_null-07.adoc[folly::not_null<PtrT, NullHandlerT>]>
:relfileprefix: ../
:mrdocs:

Hashing: ‐ Forwards to underlying PtrT.

== Synopsis

Declared in `<folly/memory/not_null.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename PtrT,
    typename NullHandlerT>
struct hash<xref:folly/not_null-07.adoc[folly::not_null<PtrT, NullHandlerT>]>
    : hash<PtrT>
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `hash<PtrT>`
| 
|===


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