Gemstone Common Library
Ordered
Adds a key/value pair to the OrderedDictionaryTKey, TValue by using the specified function, if the key does not already exist as an O(1) operation.
Definition
Namespace: Gemstone.Collections
Assembly: Gemstone.Common (in Gemstone.Common.dll) Version: 1.0.128 -- Release Build+d050cfc5563c89a1188cc3c6b2d417530856f490
The value for the key. This will be either the existing value for the key if the key is already in the dictionary, or the new value for the key as returned by valueFactory if the key was not in the dictionary.
Assembly: Gemstone.Common (in Gemstone.Common.dll) Version: 1.0.128 -- Release Build+d050cfc5563c89a1188cc3c6b2d417530856f490
C#
public TValue GetOrAdd(
TKey key,
Func<TValue> valueFactory
)VB
Public Function GetOrAdd (
key As TKey,
valueFactory As Func(Of TValue)
) As TValueC++
public:
TValue GetOrAdd(
TKey key,
Func<TValue>^ valueFactory
)JavaScript
function GetOrAdd(key, valueFactory);Parameters
- key TKey
- The key of the element to add.
- valueFactory FuncTValue
- The function used to generate a value for the key.
Return Value
TValueThe value for the key. This will be either the existing value for the key if the key is already in the dictionary, or the new value for the key as returned by valueFactory if the key was not in the dictionary.
Exceptions
| ArgumentNullException | key is null.-or-valueFactory is null. |