[#bsl-unordered_map-02b-operator_assign-08]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_map-02b.adoc[unordered_map]::operator=
:relfileprefix: ../../
:mrdocs:

Assignment operators

== Synopses

Declared in `<bslstl_unorderedmap.h>`

Assign to this object the value, hasher, key‐equality functor, and `max_load_factor` of the specified `rhs` object, propagate to this object the allocator of `rhs` if the `ALLOCATOR` type has trait `propagate_on_container_copy_assignment`, and return a reference providing modifiable access to this object. Note that this method requires that the (template parameter) types `KEY` and `VALUE` both be `copy‐constructible` (see {Requirements on `value_type`}).


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_map-02b.adoc[unordered_map]&
xref:bsl/unordered_map-02b/operator_assign-02.adoc[operator=](xref:bsl/unordered_map-02b.adoc[unordered_map] const& rhs);
----

[.small]#xref:bsl/unordered_map-02b/operator_assign-02.adoc[_» more..._]#

Assign to this object the value, hash function, and key‐equality comparator of the specified `rhs` object, propagate to this object the allocator of `rhs` if the `ALLOCATOR` type has trait `propagate_on_container_move_assignment`, and return a reference providing modifiable access to this object. The contents of `rhs` are moved (in constant time) to this unordered map if `get_allocator() == rhs.get_allocator()` (after accounting for the aforementioned trait); otherwise, all elements in this container are either destroyed or move‐assigned to, and each additional element in `rhs` is move‐inserted into this unordered_map. `rhs` is left in a valid but unspecified state, and if an exception is thrown, `*this` is left in a valid but unspecified state. This method requires that the type `value_type` be `move‐constructible` (see {Requirements on `value_type`}).


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_map-02b.adoc[unordered_map]&
xref:bsl/unordered_map-02b/operator_assign-04.adoc[operator=](xref:BloombergLP/bslmf/MovableRef.adoc[BloombergLP::bslmf::MovableRef<unordered_map>] rhs) noexcept(/* see-below */);
----

[.small]#xref:bsl/unordered_map-02b/operator_assign-04.adoc[_» more..._]#

Assign to this unordered map the value of the of the specified initializer list `rhs`, and return a reference providing modifiable access to this object. This method requires that the (template parameter) type `value_type` be `copy‐insertable` into this list.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_map-02b.adoc[unordered_map]&
xref:bsl/unordered_map-02b/operator_assign-00.adoc[operator=](std::initializer_list<value_type> rhs);
----

[.small]#xref:bsl/unordered_map-02b/operator_assign-00.adoc[_» more..._]#


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