[#BloombergLP-ball-CountingAllocator-2constructor]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/CountingAllocator.adoc[CountingAllocator]::CountingAllocator
:relfileprefix: ../../../
:mrdocs:

Create a counting allocator having an initial byte count of 0&period;

== Synopsis

Declared in `&lt;ball&lowbar;countingallocator&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
CountingAllocator(xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0);
----

== Description

Optionally specify a `basicAllocator` used to supply memory&period; If `basicAllocator` is 0, the currently installed default allocator is used&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *basicAllocator*
| memory allocator&semi; null uses the default
|===


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