CollectionsMarshal.GetValueRefOrAddDefault Method

Definition

Namespace:

System.Runtime.InteropServices

Assembly:

System.Runtime.InteropServices.dll

Overloads

GetValueRefOrAddDefault<TKey,TValue,TAlternateKey>(Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>, TAlternateKey, Boolean)	Gets a ref to a TValue in the Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>, adding a new entry with a default value if it does not exist in the dictionary.
GetValueRefOrAddDefault<TKey,TValue>(Dictionary<TKey,TValue>, TKey, Boolean)	Gets a reference to a TValue in the specified dictionary, adding a new entry with a default value if the key does not exist.

GetValueRefOrAddDefault<TKey,TValue,TAlternateKey>(Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>, TAlternateKey, Boolean)

Gets a ref to a TValue in the Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>, adding a new entry with a default value if it does not exist in the dictionary.

public:
generic <typename TKey, typename TValue, typename TAlternateKey>
 static TValue % GetValueRefOrAddDefault(System::Collections::Generic::Dictionary<TKey, TValue>::AlternateLookup<TAlternateKey> dictionary, TAlternateKey key, [Runtime::InteropServices::Out] bool % exists);

public static ref TValue? GetValueRefOrAddDefault<TKey,TValue,TAlternateKey> (System.Collections.Generic.Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey> dictionary, TAlternateKey key, out bool exists);

static member GetValueRefOrAddDefault : System.Collections.Generic.Dictionary<'Key, 'Value>.AlternateLookup<'AlternateKey> * 'AlternateKey * bool -> 'Value

Public Shared Function GetValueRefOrAddDefault(Of TKey, TValue, TAlternateKey) (dictionary As Dictionary(Of TKey, TValue).AlternateLookup(Of TAlternateKey), key As TAlternateKey, ByRef exists As Boolean) As TValue

Type Parameters

TKey

The type of the keys in the dictionary.

TValue

The type of the values in the dictionary.

TAlternateKey

The type of the alternate key in the dictionary lookup.

Parameters

dictionary

Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>

The dictionary to get the ref to TValue from.

key

TAlternateKey

The key used for lookup.

exists

Boolean

Whether or not a new entry for the given key was added to the dictionary.

Returns

TValue

A reference to a TValue in the specified Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey>.

Remarks

Items should not be added to or removed from the Dictionary<TKey,TValue>.AlternateLookup<TAlternateKey> while the ref TValue is in use.

GetValueRefOrAddDefault<TKey,TValue>(Dictionary<TKey,TValue>, TKey, Boolean)

Source:

CollectionsMarshal.cs

Gets a reference to a TValue in the specified dictionary, adding a new entry with a default value if the key does not exist.

public:
generic <typename TKey, typename TValue>
 static TValue % GetValueRefOrAddDefault(System::Collections::Generic::Dictionary<TKey, TValue> ^ dictionary, TKey key, [Runtime::InteropServices::Out] bool % exists);

public static ref TValue? GetValueRefOrAddDefault<TKey,TValue> (System.Collections.Generic.Dictionary<TKey,TValue> dictionary, TKey key, out bool exists);

static member GetValueRefOrAddDefault : System.Collections.Generic.Dictionary<'Key, 'Value> * 'Key * bool -> 'Value

Public Shared Function GetValueRefOrAddDefault(Of TKey, TValue) (dictionary As Dictionary(Of TKey, TValue), key As TKey, ByRef exists As Boolean) 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 reference to TValue from.

key

TKey

The key used for lookup.

exists

Boolean

When this method returns, contains true if key already existed in the dictionary, and false if a new entry was added.

Returns

TValue

A reference to a TValue in the specified dictionary.

Remarks

Items should not be added to or removed from the Dictionary<TKey,TValue> while the ref TValue is in use.