OrderedDictionaryTKey, TValueGetOrAdd(TKey, TValue) Method

Adds a key/value pair to the OrderedDictionaryTKey, TValue if the key does not already exist as an O(1) operation.

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

Syntax

C++

JavaScript

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public TValue GetOrAdd(
	TKey key,
	TValue value
)

Public Function GetOrAdd ( 
	key As TKey,
	value As TValue
) As TValue

public:
TValue GetOrAdd(
	TKey key, 
	TValue value
)

member GetOrAdd : 
        key : 'TKey * 
        value : 'TValue -> 'TValue

function GetOrAdd(key, value);

View Source

Parameters

key TKey: The key of the element to add.
value TValue: The value to be added, if the key does not already exist.

Return Value

TValue
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 if the key was not in the dictionary.

Exceptions

Exception	Condition
ArgumentNullException	key is null.

Reference

OrderedDictionaryTKey, TValue Class

GetOrAdd Overload

GSF.Collections Namespace