CollectionsMarshal.GetValueRefOrNullRef<TKey,TValue> Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets either a reference to a TValue
in the Dictionary<TKey,TValue> or a reference null
if it does not exist in the dictionary
.
public:
generic <typename TKey, typename TValue>
static TValue % GetValueRefOrNullRef(System::Collections::Generic::Dictionary<TKey, TValue> ^ dictionary, TKey key);
public static ref TValue GetValueRefOrNullRef<TKey,TValue> (System.Collections.Generic.Dictionary<TKey,TValue> dictionary, TKey key);
static member GetValueRefOrNullRef : System.Collections.Generic.Dictionary<'Key, 'Value> * 'Key -> 'Value
Public Shared Function GetValueRefOrNullRef(Of TKey, TValue) (dictionary As Dictionary(Of TKey, TValue), key As TKey) As TValue
Type Parameters
- TKey
The type of a key.
- TValue
The type of a value.
Parameters
- dictionary
- Dictionary<TKey,TValue>
The dictionary to get the ref to TValue
from.
- key
- TKey
The key used for lookup.
Returns
A reference to a TValue
in the Dictionary<TKey,TValue> or a reference null
if it does not exist in the dictionary
..
Remarks
Items should not be added or removed from the Dictionary<TKey,TValue> while the ref TValue
is in use.
The ref null
can be detected by calling System.Runtime.CompilerServices.Unsafe.IsNullRef<T>(T).
Applies to
Feedback
https://aka.ms/ContentUserFeedback.
Kommer snart: I hele 2024 udfaser vi GitHub-problemer som feedbackmekanisme for indhold og erstatter det med et nyt feedbacksystem. Du kan få flere oplysninger under:Indsend og få vist feedback om