CollectionsMarshal.GetValueRefOrNullRef<TKey,TValue> Method
Definition
Important
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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
.NET
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