[#BloombergLP-bdlc-FlatHashMap-operator_subs-03]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashMap.adoc[FlatHashMap]::operator[]
:relfileprefix: ../../../
:mrdocs:

Subscript operators

== Synopses

Declared in `<bdlc_flathashmap.h>`

Return a reference providing modifiable access to the mapped value associated with the specified `key` in this map. If this map does not already contain an element having `key`, insert an element with the `key` and a default‐constructed `VALUE`, and return a reference to the newly mapped value. If `key` is movable, `key` is left in a (valid) unspecified state.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
VALUE&
xref:BloombergLP/bdlc/FlatHashMap/operator_subs-06.adoc[operator[]](xref:BloombergLP/bslmf/MovableRef.adoc[bslmf::MovableRef<KEY>] key);
----

[.small]#xref:BloombergLP/bdlc/FlatHashMap/operator_subs-06.adoc[_» more..._]#

Return a reference providing modifiable access to the mapped value associated with the specified `key` in this map. If this map does not already contain an element having `key`, insert an element with the `key` and a default‐constructed `VALUE`, and return a reference to the newly mapped value. If `key` is movable, `key` is left in a (valid) unspecified state.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
VALUE&
xref:BloombergLP/bdlc/FlatHashMap/operator_subs-05.adoc[operator[]](KEY const& key);
----

[.small]#xref:BloombergLP/bdlc/FlatHashMap/operator_subs-05.adoc[_» more..._]#

Return a reference providing modifiable access to the mapped value associated with the a key equivalent to the specified `key` in this map. If this map does not already contain an element eqivalent to `key`, insert an element with the KEY constructed from `std::forward<LOOKUP_KEY>(k)` and a default‐constructed `VALUE`, and return a reference to the newly mapped value.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class LOOKUP_KEY>
VALUE&
xref:BloombergLP/bdlc/FlatHashMap/operator_subs-09.adoc[operator[]](LOOKUP_KEY&& key)
requires BloombergLP::bslmf::IsTransparentPredicate<HASH, LOOKUP_KEY>::value
         && BloombergLP::bslmf::IsTransparentPredicate<EQUAL,LOOKUP_KEY>::value;
----

[.small]#xref:BloombergLP/bdlc/FlatHashMap/operator_subs-09.adoc[_» more..._]#


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