CollectionExtensionsGetOrAddTKey, TValue(IDictionaryTKey, TValue, TKey, FuncTKey, TValue) Method

Adds a key/value pair to the IDictionaryTKey, TValue if the key does not already exist.

Definition

Namespace: Gemstone.Collections.CollectionExtensions
Assembly: Gemstone.Common (in Gemstone.Common.dll) Version: 1.0.128 -- Release Build+d050cfc5563c89a1188cc3c6b2d417530856f490

C#View Source Request Example

public static TValue GetOrAdd<TKey, TValue>(
	this IDictionary<TKey, TValue> dictionary,
	TKey key,
	Func<TKey, TValue> valueFactory
)

VBView Source Request Example

<ExtensionAttribute>
Public Shared Function GetOrAdd(Of TKey, TValue) ( 
	dictionary As IDictionary(Of TKey, TValue),
	key As TKey,
	valueFactory As Func(Of TKey, TValue)
) As TValue

C++View Source Request Example

public:
[ExtensionAttribute]
generic<typename TKey, typename TValue>
static TValue GetOrAdd(
	IDictionary<TKey, TValue>^ dictionary, 
	TKey key, 
	Func<TKey, TValue>^ valueFactory
)

JavaScriptView Source Request Example

JavaScript does not support generic types or methods.

Parameters

dictionary IDictionaryTKey, TValue: The dictionary to add the key/value pair to if the key does not already exist.
key TKey: The key to be added to the dictionary if it does not already exist.
valueFactory FuncTKey, TValue: The function used to generate a value for the key.

Type Parameters

TKey: The type of the keys in the dictionary.
TValue: The type of the values in the dictionary.

Return Value

TValue
The value of the key in the dictionary.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IDictionaryTKey, TValue. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).