[#BloombergLP-bslstp-Hash-09]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstp.adoc[bslstp]::Hash
:relfileprefix: ../../
:mrdocs:

Empty base class for hashing. No general hash struct defined, each type requires a specialization. Leaving this struct declared but undefined will generate error messages that are more clear when someone tries to use a key that does not have a corresponding hash function.

== Synopsis

Declared in `<bslstp_hash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class HASH_KEY>
struct Hash;
----

== Specializations

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstp/Hash-0a.adoc[`Hash<char>`] 
| Specialization of `Hash` for `char` values.
| xref:BloombergLP/bslstp/Hash-0f3.adoc[`Hash<int>`] 
| Specialization of `Hash` for `int` values.
| xref:BloombergLP/bslstp/Hash-0fb.adoc[`Hash<long>`] 
| Specialization of `Hash` for `long` values.
| xref:BloombergLP/bslstp/Hash-00c.adoc[`Hash<long long>`] 
| Specialization of `Hash` for `long long` values.
| xref:BloombergLP/bslstp/Hash-0b.adoc[`Hash<short>`] 
| Specialization of `Hash` for `short` values.
| xref:BloombergLP/bslstp/Hash-008.adoc[`Hash<signed char>`] 
| Specialization of `Hash` for `signed` `char` values.
| xref:BloombergLP/bslstp/Hash-01d.adoc[`Hash<unsigned char>`] 
| Specialization of `Hash` for `unsigned` `char` values.
| xref:BloombergLP/bslstp/Hash-06.adoc[`Hash<unsigned int>`] 
| Specialization of `Hash` for `unsigned` `int` values.
| xref:BloombergLP/bslstp/Hash-05.adoc[`Hash<unsigned long>`] 
| Specialization of `Hash` for `unsigned` `long` values.
| xref:BloombergLP/bslstp/Hash-018.adoc[`Hash<unsigned long long>`] 
| Specialization of `Hash` for `unsigned` `long long` values.
| xref:BloombergLP/bslstp/Hash-00d.adoc[`Hash<unsigned short>`] 
| Specialization of `Hash` for `unsigned` `short` values.
|===



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