CollectionsMarshal.GetValueRefOrNullRef 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.
Overloads
GetValueRefOrNullRef<TKey,TValue,TAlternateKey>(Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>, TAlternateKey) | |
GetValueRefOrNullRef<TKey,TValue>(Dictionary<TKey,TValue>, TKey) |
Gets either a reference to a |
GetValueRefOrNullRef<TKey,TValue,TAlternateKey>(Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>, TAlternateKey)
public:
generic <typename TKey, typename TValue, typename TAlternateKey>
static TValue % GetValueRefOrNullRef(System::Collections::Generic::Dictionary<TKey, TValue>::AlternateLookup<TAlternateKey> dictionary, TAlternateKey key);
public static ref TValue GetValueRefOrNullRef<TKey,TValue,TAlternateKey> (System.Collections.Generic.Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey> dictionary, TAlternateKey key);
static member GetValueRefOrNullRef : System.Collections.Generic.Dictionary<'Key, 'Value>.AlternateLookup<'AlternateKey> * 'AlternateKey -> 'Value
Public Shared Function GetValueRefOrNullRef(Of TKey, TValue, TAlternateKey) (dictionary As Dictionary(Of TKey, TValue).AlternateLookup(Of TAlternateKey), key As TAlternateKey) As TValue
Type Parameters
- TKey
- TValue
- TAlternateKey
Parameters
- key
- TAlternateKey
Returns
Applies to
GetValueRefOrNullRef<TKey,TValue>(Dictionary<TKey,TValue>, TKey)
- Source:
- CollectionsMarshal.cs
- Source:
- CollectionsMarshal.cs
- Source:
- CollectionsMarshal.cs
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: Under hela 2024 kommer vi att fasa ut GitHub-problem som feedbackmekanism för innehåll och ersätta det med ett nytt feedbacksystem. Mer information finns i:Skicka och visa feedback för