[#bsl-unordered_multimap-0b0-erase-0b5]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_multimap-0b0.adoc[unordered_multimap]::erase
:relfileprefix: ../../
:mrdocs:

`erase` overloads

== Synopses

Declared in `<bslstl_unorderedmultimap.h>`

Remove from this unordered multimap the `value_type` object at the specified `position`, and return an iterator referring to the element immediately following the removed element, or to the past‐the‐end position if the removed element was the last element in the sequence of elements maintained by this unordered multimap. This method invalidates only iterators and references to the removed element and previously saved values of the `end()` iterator, and preserves the relative order of the elements not removed. The behavior is undefined unless `position` refers to a `value_type` object in this unordered multimap.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_multimap-0b0/iterator.adoc[unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::iterator]
xref:bsl/unordered_multimap-0b0/erase-0e.adoc[erase](xref:bsl/unordered_multimap-0b0/const_iterator.adoc[const_iterator] position);
----

[.small]#xref:bsl/unordered_multimap-0b0/erase-0e.adoc[_» more..._]#

Same as the related overload above for `erase`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_multimap-0b0/iterator.adoc[unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::iterator]
xref:bsl/unordered_multimap-0b0/erase-00.adoc[erase](xref:bsl/unordered_multimap-0b0/iterator.adoc[iterator] position);
----

[.small]#xref:bsl/unordered_multimap-0b0/erase-00.adoc[_» more..._]#

Remove from this unordered multimap all `value_type` objects with a key equivalent to the specified `key`, if such exist, and return the number of objects erased; otherwise, if there are no `value_type` objects with a key equivalent to `key`, return 0 with no other effect. This method invalidates only iterators and references to the removed element and previously saved values of the `end()` iterator, and preserves the relative order of the elements not removed.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_multimap-0b0/size_type.adoc[unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::size_type]
xref:bsl/unordered_multimap-0b0/erase-09a.adoc[erase](xref:bsl/unordered_multimap-0b0/key_type.adoc[key_type] const& key);
----

[.small]#xref:bsl/unordered_multimap-0b0/erase-09a.adoc[_» more..._]#

Same as the preceding `erase` overload for transparent key types.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_KEY>
xref:bsl/unordered_multimap-0b0/size_type.adoc[size_type]
xref:bsl/unordered_multimap-0b0/erase-09e.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_multimap-0b0/erase-09e.adoc[_» more..._]#

Remove from this unordered multimap the `value_type` objects starting at the specified `first` position up to, but not including, the specified `last` position, and return `last`. This method invalidates only iterators and references to the removed element and previously saved values of the `end()` iterator, and preserves the relative order of the elements not removed. The behavior is undefined unless `first` and `last` either refer to elements in this unordered multimap or are the `end` iterator, and the `first` position is at or before the `last` position in the sequence provided by this container.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_multimap-0b0/iterator.adoc[unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::iterator]
xref:bsl/unordered_multimap-0b0/erase-0bb.adoc[erase](
    xref:bsl/unordered_multimap-0b0/const_iterator.adoc[const_iterator] first,
    xref:bsl/unordered_multimap-0b0/const_iterator.adoc[const_iterator] last);
----

[.small]#xref:bsl/unordered_multimap-0b0/erase-0bb.adoc[_» more..._]#


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