| Algorithms..::IsSubsetOf<(Of <T>)> Method (IEnumerable<(Of <T>)>, IEnumerable<(Of <T>)>, IEqualityComparer<(Of <T>)>) |
| See Also |
| |
[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]
Determines if one collection is a subset of another, considered as sets. The first set is a subset
of the second set if every item in the first set also occurs in the second set. If an item appears X times in the first set,
it must appear at least X times in the second set.
Namespace: Wintellect.PowerCollections
Assembly:
PowerCollections (in PowerCollections.dll)
Syntax
| C# |
|---|
public static bool IsSubsetOf<T>( IEnumerable<T> collection1, IEnumerable<T> collection2, IEqualityComparer<T> equalityComparer ) |
| Visual Basic (Declaration) |
|---|
Public Shared Function IsSubsetOf(Of T) ( _ collection1 As IEnumerable(Of T), _ collection2 As IEnumerable(Of T), _ equalityComparer As IEqualityComparer(Of T) _ ) As Boolean |
| Visual C++ |
|---|
public: generic<typename T> static bool IsSubsetOf ( IEnumerable<T>^ collection1, IEnumerable<T>^ collection2, IEqualityComparer<T>^ equalityComparer ) |
Parameters
- collection1
- IEnumerable<(Of <T>)>
The first collection.
- collection2
- IEnumerable<(Of <T>)>
The second collection.
- equalityComparer
- IEqualityComparer<(Of <T>)>
The IEqualityComparer<T> used to compare items for equality.
Return Value
True if collection1 is a subset of collection2, considered as sets.Type Parameters
- T
Remarks
If both collections are Set, Bag, OrderedSet, or OrderedBag collections, it is more efficient to use the IsSubsetOf method on that class.
Exceptions
| Exception | Condition |
|---|---|
| System..::ArgumentNullException | collection1 or collection2 is null. |
See Also
Algorithms Class
Wintellect.PowerCollections Namespace
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