[#BloombergLP-bdlc-FlatHashMap-erase-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashMap.adoc[FlatHashMap]::erase
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Remove from this map the element whose key is equal to the specified `key`, if it exists, and return 1; otherwise (there is no element having `key` in this map), return 0 with no other effect. This method invalidates all iterators and references to the removed element.

== Synopsis

Declared in `<bdlc_flathashmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::size_t
erase(KEY const& key);
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