CollectionExtensions.GetOrAdd<TKey, TValue>(IDictionary<TKey, TValue>, TKey, TValue) Method

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

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

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

JavaScript does not support generic types or methods.

Parameters

dictionary  IDictionary<TKey, 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.

value  TValue

The value to assign to the key if the key does not already exist.

Type Parameters

TKey

The type of the keys in the dictionary.

TValue

The type of the values in the dictionary.

Return Value

Usage Note

Reference