ProcessDictionaryTKey, TValueAddOrUpdate(TKey, FuncTKey, 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: 2.4.304-beta+e40582bbb64c28edadb696048770577c4e325275

Syntax

C++

JavaScript

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

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

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

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

function AddOrUpdate(key, addValueFactory, updateValueFactory);

View Source

Parameters

key TKey: The key to be added or whose value should be updated
addValueFactory FuncTKey, TValue: The function used to generate a value 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