[#bsl-map-0a7-insert_or_assign-0c]
= xref:bsl.adoc[bsl]::xref:bsl/map-0a7.adoc[map]::insert_or_assign
:relfileprefix: ../../
:mrdocs:

Insert or assign near `hint` using a transparent `key`.

== Synopsis

Declared in `<bslstl_map.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class LOOKUP_KEY,
    class BDE_OTHER_TYPE>
xref:bsl/map-0a7/iterator.adoc[iterator]
insert_or_assign(
    xref:bsl/map-0a7/const_iterator.adoc[const_iterator] hint,
    LOOKUP_KEY&& key,
    BDE_OTHER_TYPE&& obj)
requires BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,
                                                   LOOKUP_KEY>::value;
----

== Description

If a key equivalent to the specified `key` already exists in this `_map`, assign the specified `obj` to the value associated with that key, and return an iterator referring to the existing item. Otherwise, insert into this map a newly‐created `value_type` object constructed from `(std::forward<KEY>(key), std::forward<BDE_OTHER_TYPE>(obj)...))`, and return an iterator referring to the newly‐created entry. Use the specified `hint` as a starting point for checking to see if the key already in the map.

== Return Value

iterator to the existing or newly inserted element

== Parameters

[cols="1,4"]
|===
| Name| Description
| *hint*
| iterator hint for the insertion position
| *key*
| transparent key for the element
| *obj*
| mapped value to assign or insert
|===


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