KGy SOFT Core Libraries Help
CacheTKey, TValueContains
Determines whether the CacheTKey, TValue contains a specific key.
Definition
Namespace: KGySoft.Collections
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 9.0.0
if the CacheTKey, TValue contains an element with the specified key; otherwise, .
IReadOnlyDictionaryTKey, TValueContainsKey(TKey)
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 9.0.0
C#
public bool ContainsKey(
TKey key
)VB
Public Function ContainsKey (
key As TKey
) As BooleanC++
public:
virtual bool ContainsKey(
TKey key
) sealedF#
abstract ContainsKey :
key : 'TKey -> bool
override ContainsKey :
key : 'TKey -> bool Parameters
- key TKey
- The key to locate in the CacheTKey, TValue.
Return Value
Booleanif the CacheTKey, TValue contains an element with the specified key; otherwise, .
Implements
IDictionaryTKey, TValueContainsKey(TKey)IReadOnlyDictionaryTKey, TValueContainsKey(TKey)
Remarks
This method approaches an O(1) operation.
Exceptions
| ArgumentNullException | key is . |