Lookup¶
All methods in this section can be executed concurrently with each other and concurrently-safe modifiers.
find¶
bool find( const_accessor& result, const key_type& key ) const; bool find( accessor& result, const key_type& key );If the accessor
result
is not empty, releases theresult
.If an element with the key that is equivalent to
key
exists, sets theresult
to provide access to this element.Returns:
true
if an element with the key equivalent tokey
is found;false
, otherwise.
count¶
size_type count( const key_type& key ) const;Returns:
1
if an element with the equivalent tokey
exists;0
, otherwise.