[#BloombergLP-bslstl-AlgorithmUtil-containerEraseIf]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/AlgorithmUtil.adoc[AlgorithmUtil]::containerEraseIf
:relfileprefix: ../../../
:mrdocs:

Erase all the elements in the specified container `container` that satisfy the specified predicate `predicate`. Return the number of elements erased.

== Synopsis

Declared in `<bslstl_algorithm.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class CONTAINER,
    class PREDICATE>
static
CONTAINER::size_type
containerEraseIf(
    CONTAINER& container,
    PREDICATE predicate);
----

== Return Value

the number of elements erased

== Parameters

[cols="1,4"]
|===
| Name| Description
| *container*
| container from which matching elements are erased
| *predicate*
| unary predicate selecting elements to erase
|===


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