Return whether this map contains an element equivalent to key.
Declared in <bslstl_map.h>
template<class LOOKUP_KEY>
bool
contains(LOOKUP_KEY const& key) const
requires BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,
LOOKUP_KEY>::value;Return true if this map contains an element whose key is equivalent to the specified key.
true if an equivalent key is present
| Name | Description |
|---|---|
| key | key value to look up |