[#bsl-map-0af-operator_subs-00]
= xref:bsl.adoc[bsl]::xref:bsl/map-0af.adoc[map<TimeInterval, Node*>]::operator[]
:relfileprefix: ../../
:mrdocs:

Return a reference providing modifiable access to the mapped‐value associated with the specified `key`; if this `map` does not already contain a `value_type` object having an equivalent key, first insert a new `value_type` object having the move‐inserted `key` and a default‐constructed `VALUE` object, and return a reference to the newly mapped (default) value. This method requires that the (template parameter) type `KEY` be `move‐insertable` into this map and the (template parameter) type `VALUE` be `default‐insertable` into this map (see {Requirements on `KEY` and `VALUE`}).

== Synopsis

Declared in `<bslstl_map.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/add_lvalue_reference-0c/type.adoc[add_lvalue_reference<Node*>::type]
operator[](xref:BloombergLP/bslmf/MovableRef.adoc[BloombergLP::bslmf::MovableRef<key_type>] key);
----


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