 | AutoWeakIndexerTKey, TValue Class |
A thread safe, DictionaryTKey, TValue like implementation that populates it's content on demand, i.e. calling indexer[key] will never return null.
The cache has only weak references to the values, so the values may come and go.
Inheritance HierarchyNamespace: TomsToolbox.Essentials
Assembly: TomsToolbox.Essentials (in TomsToolbox.Essentials.dll)
Syntaxpublic sealed class AutoWeakIndexer<TKey, TValue> : IEnumerable<KeyValuePair<TKey, TValue>>, IEnumerable where TValue : class
Type Parameters
- TKey
- The type of the key.
- TValue
- The type of the value.
The AutoWeakIndexerTKey, TValue type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | AutoWeakIndexerTKey, TValue |
Initializes a new instance of the AutoWeakIndexerTKey, TValue class.
|
Properties| Name | Description | |
|---|---|---|
 | Comparer |
Gets the IEqualityComparerT that is used to determine equality of keys for the dictionary.
|
| Item |
Gets the value associated with the specified key.
|
| Keys |
Gets a collection containing the keys in the AutoWeakIndexerTKey, TValue.
|
| Values |
Gets a collection containing the values in the AutoWeakIndexerTKey, TValue.
|
Methods| Name | Description | |
|---|---|---|
| Clear |
Removes all keys and values from the AutoWeakIndexerTKey, TValue.
|
| ContainsKey |
Determines whether the AutoWeakIndexerTKey, TValue contains the specified key.
|
| GetEnumerator |
Returns an enumerator that iterates through the items of the AutoWeakIndexerTKey, TValue.
|
| TryGetValue |
Gets the value associated with the specified key.
|
Extension Methods| Name | Description | |
|---|---|---|
 | CombineFlagsKeyValuePairTKey, TValue |
Combines the flags into a single Enum.
(Defined by EnumExtensions.) |
| ContainsAnyKeyValuePairTKey, TValue(KeyValuePairTKey, TValue) | Overloaded.
Shortcut to test if any of the given items are contained in the specified object.
(Defined by CollectionExtensions.) |
| ContainsAnyKeyValuePairTKey, TValue(IEqualityComparerKeyValuePairTKey, TValue, KeyValuePairTKey, TValue) | Overloaded.
Shortcut to test if any of the given items are contained in the specified object.
(Defined by CollectionExtensions.) |
| FindIndexKeyValuePairTKey, TValue |
Searches for an element that matches the conditions defined by the specified predicate,
and returns the zero-based index of the first occurrence within the entire IEnumerableT.
(Defined by CollectionExtensions.) |
| ForEachKeyValuePairTKey, TValue(ActionKeyValuePairTKey, TValue) | Overloaded.
Performs the specified action on each element of the collection.
(Defined by CollectionExtensions.) |
| ForEachKeyValuePairTKey, TValue(ActionKeyValuePairTKey, TValue, Int32) | Overloaded.
Performs the specified action on each element of the collection, providing also the index of the item.
(Defined by CollectionExtensions.) |
| IndexOfKeyValuePairTKey, TValue(KeyValuePairTKey, TValue) | Overloaded.
Searches for the specified object and returns the zero-based index of the first occurrence within all items.
(Defined by CollectionExtensions.) |
| IndexOfKeyValuePairTKey, TValue(KeyValuePairTKey, TValue, IEqualityComparerKeyValuePairTKey, TValue) | Overloaded.
Searches for the specified object and returns the zero-based index of the first occurrence within all items.
(Defined by CollectionExtensions.) |
| ObservableCastTTarget |
Returns an observable collection of objects of type TTarget that mirrors the source collection.
(Defined by ObservableExtensions.) |
| SafeCastT |
Performs a cast from object to T, avoiding possible null violations if T is a value type.
(Defined by ObjectExtensions.) |
Remarks
This implementation is thread safe; the draw back is that generating new items is slow, so this type is not suitable for caching a large amount of items.
See Also