KGy SOFT Core Libraries Help
Thread
Adds a key/value pair to the ThreadSafeDictionaryTKey, TValue by using the specified addValueFactory
if the key does not already exist, and returns either the added or the existing value.
Definition
Namespace: KGySoft.Collections
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 10.0.0
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 result of the specified addValueFactory if the key was not in the dictionary.
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 10.0.0
C#
public TValue GetOrAdd(
TKey key,
Func<TKey, TValue> addValueFactory
)VB
Public Function GetOrAdd (
key As TKey,
addValueFactory As Func(Of TKey, TValue)
) As TValueC++
public:
TValue GetOrAdd(
TKey key,
Func<TKey, TValue>^ addValueFactory
)F#
member GetOrAdd :
key : 'TKey *
addValueFactory : Func<'TKey, 'TValue> -> 'TValue Parameters
- key TKey
- The key of the element to add or whose value should be returned.
- addValueFactory FuncTKey, TValue
- The delegate to be used to generate the value, if the key does not already exist.
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 result of the specified addValueFactory if the key was not in the dictionary.
Exceptions
| ArgumentNullException | key or addValueFactory is . |