[#bsl-unordered_set-0d2d-erase-02]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_set-0d2d.adoc[unordered_set]::erase
:relfileprefix: ../../
:mrdocs:

`erase` overloads

== Synopses

Declared in `<bslstl_unorderedset.h>`

Erase the element at `position`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_set-0d2d/iterator.adoc[unordered_set<KEY, HASH, EQUAL, ALLOCATOR>::iterator]
xref:bsl/unordered_set-0d2d/erase-0b.adoc[erase](xref:bsl/unordered_set-0d2d/const_iterator.adoc[const_iterator] position);
----

[.small]#xref:bsl/unordered_set-0d2d/erase-0b.adoc[_» more..._]#

Erase the element equivalent to `key`, if present.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_set-0d2d/size_type.adoc[unordered_set<KEY, HASH, EQUAL, ALLOCATOR>::size_type]
xref:bsl/unordered_set-0d2d/erase-0e.adoc[erase](xref:bsl/unordered_set-0d2d/key_type.adoc[key_type] const& key);
----

[.small]#xref:bsl/unordered_set-0d2d/erase-0e.adoc[_» more..._]#

Erase the element equivalent to `key`, if present.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_KEY>
xref:bsl/unordered_set-0d2d/size_type.adoc[size_type]
xref:bsl/unordered_set-0d2d/erase-083.adoc[erase](t_KEY&& key)
requires BloombergLP::bslmf::IsTransparentPredicate<HASH, t_KEY>::value &&
        BloombergLP::bslmf::IsTransparentPredicate<EQUAL,t_KEY>::value &&
        !is_convertible<BSLS_COMPILERFEATURES_FORWARD_REF(t_KEY),
                        iterator>::value &&
        !is_convertible<BSLS_COMPILERFEATURES_FORWARD_REF(t_KEY),
                        const_iterator>::value;
----

[.small]#xref:bsl/unordered_set-0d2d/erase-083.adoc[_» more..._]#

Erase the elements in the half‐open range `[first, last)]`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_set-0d2d/iterator.adoc[unordered_set<KEY, HASH, EQUAL, ALLOCATOR>::iterator]
xref:bsl/unordered_set-0d2d/erase-080.adoc[erase](
    xref:bsl/unordered_set-0d2d/const_iterator.adoc[const_iterator] first,
    xref:bsl/unordered_set-0d2d/const_iterator.adoc[const_iterator] last);
----

[.small]#xref:bsl/unordered_set-0d2d/erase-080.adoc[_» more..._]#

== Return Value

* iterator following the erased element
* `1` if erased, otherwise `0`
* `last`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *position*
| iterator to the element to erase
| *key*
| key value to look up
| *first*
| beginning of the range
| *last*
| end of the range (one past last)
|===


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