[#BloombergLP-bdlc-FlatHashMap-insert-00]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashMap.adoc[FlatHashMap]::insert
:relfileprefix: ../../../
:mrdocs:

Insert the specified `value` into this map if the key of `value` does not already exist in this map; otherwise, this method has no effect. Return a `pair` whose `first` member is an iterator referring to the (possibly newly inserted) modifiable element in this map whose key is equivalent to that of the element to be inserted, and whose `second` member is `true` if a new element was inserted, and `false` if an element with an equivalent key was already present.

== Synopsis

Declared in `<bdlc_flathashmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class VALUE_TYPE>
xref:bsl/pair-0b.adoc[bsl::pair<iterator, bool>]
insert(VALUE_TYPE&& value)
requires bsl::is_constructible<value_type,
                                                  VALUE_TYPE&&>::value;
----


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