KGy SOFT Core Libraries Help
Thread
Uses the specified delegates to add a key/value pair to the ThreadSafeDictionaryTKey, TValue if the key does not already exist,
or to update a key/value pair in the ThreadSafeDictionaryTKey, TValue if the key already exists.
Definition
Namespace: KGySoft.Collections
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 10.0.0
The new value for the key. This will be either the result of addValueFactory (if the key was absent) or the result of updateValueFactory (if the key was present).
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 10.0.0
C#
public TValue AddOrUpdate(
TKey key,
Func<TKey, TValue> addValueFactory,
Func<TKey, TValue, TValue> updateValueFactory
)VB
Public Function AddOrUpdate (
key As TKey,
addValueFactory As Func(Of TKey, TValue),
updateValueFactory As Func(Of TKey, TValue, TValue)
) As TValueC++
public:
TValue AddOrUpdate(
TKey key,
Func<TKey, TValue>^ addValueFactory,
Func<TKey, TValue, TValue>^ updateValueFactory
)F#
member AddOrUpdate :
key : 'TKey *
addValueFactory : Func<'TKey, 'TValue> *
updateValueFactory : Func<'TKey, 'TValue, 'TValue> -> 'TValue Parameters
- key TKey
- The key to be added or whose value should be updated.
- addValueFactory FuncTKey, TValue
- A delegate used to generate a value for an absent key.
- updateValueFactory FuncTKey, TValue, TValue
- A delegate used to generate a new value for an existing key based on the key's existing value.
Return Value
TValueThe new value for the key. This will be either the result of addValueFactory (if the key was absent) or the result of updateValueFactory (if the key was present).
Exceptions
| ArgumentNullException | key, addValueFactory or updateValueFactory is . |