ProcessDictionaryTKey, TValueAddOrUpdate(TKey, TValue, FuncTKey, TValue, TValue) Method

Adds a key/value pair to the ProcessDictionaryTKey, TValue if the key does not already exist, or updates a key/value pair in the ProcessDictionaryTKey, TValue if the key already exists.

Namespace: GSF.Collections
Assembly: GSF.Core (in GSF.Core.dll) Version: 2.4.181-beta

Syntax

C++

JavaScript

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public TValue AddOrUpdate(
	TKey key,
	TValue addValue,
	Func<TKey, TValue, TValue> updateValueFactory
)

Public Function AddOrUpdate ( 
	key As TKey,
	addValue As TValue,
	updateValueFactory As Func(Of TKey, TValue, TValue)
) As TValue

public:
TValue AddOrUpdate(
	TKey key, 
	TValue addValue, 
	Func<TKey, TValue, TValue>^ updateValueFactory
)

member AddOrUpdate : 
        key : 'TKey * 
        addValue : 'TValue * 
        updateValueFactory : Func<'TKey, 'TValue, 'TValue> -> 'TValue

function AddOrUpdate(key, addValue, updateValueFactory);

View Source

Parameters

key TKey: The key to be added or whose value should be updated
addValue TValue: The value to be added for an absent key
updateValueFactory FuncTKey, TValue, TValue: The function used to generate a new value for an existing key based on the key's existing value

Return Value

TValue
The new value for the key. This will be either be the result of addValueFactory (if the key was absent) or the result of updateValueFactory (if the key was present).

Reference

ProcessDictionaryTKey, TValue Class

AddOrUpdate Overload

GSF.Collections Namespace