[#BloombergLP-bdlc-HashTableDefaultTraits-isNull-09]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/HashTableDefaultTraits.adoc[HashTableDefaultTraits]::isNull
:relfileprefix: ../../../
:mrdocs:

`isNull` overloads

== Synopses

Declared in `<bdlc_hashtable.h>`

Same as the preceding overload for C‐string buckets.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
bool
xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-0d6.adoc[isNull](xref:BloombergLP/bdlc/HashTableDefaultTraits.adoc[ConstCharPtr] const& bucket);
----

[.small]#xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-0d6.adoc[_» more..._]#

Same as the preceding overload for `bsl::string` buckets.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
bool
xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-0d9.adoc[isNull](xref:bsl/string.adoc[bsl::string] const& bucket);
----

[.small]#xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-0d9.adoc[_» more..._]#

Return true if the specified `bucket` has a null value, and false otherwise.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class BUCKET>
static
bool
xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-03.adoc[isNull](BUCKET const& bucket);
----

[.small]#xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-03.adoc[_» more..._]#

Same as the preceding overload for key/value pair buckets.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class KEY,
    class VALUE>
static
bool
xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-0e.adoc[isNull](xref:bsl/pair-0b.adoc[bsl::pair<KEY, VALUE>] const& bucket);
----

[.small]#xref:BloombergLP/bdlc/HashTableDefaultTraits/isNull-0e.adoc[_» more..._]#


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