[#BloombergLP-bslh-hashAppend-032]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslh.adoc[bslh]::hashAppend
:relfileprefix: ../../
:mrdocs:

Passes the specified `input` into the specified `hashAlg` to be combined into the internal state of the algorithm which is used to produce the resulting hash value. Note that the `enable_if` meta‐function is used to enable this `hashAppend` function for only integral (excluding `bool`), pointer, and enum types, because these types can all be hashed as a continuous sequence of bytes. Also note that this function is defined inline because MS Visual Studio compilers before 2013 require (some) functions declared using enable_if be in‐place inline.

== Synopsis

Declared in `<bslh_hash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class HASH_ALGORITHM,
    class TYPE>
void
hashAppend(
    HASH_ALGORITHM& hashAlg,
    TYPE input)
requires (bsl::is_integral<TYPE>::value ||
     bsl::is_pointer<TYPE>::value  ||
     bsl::is_enum<TYPE>::value)    &&
    !bsl::is_same<TYPE, bool>::value;
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#