Algorithms.IsSubsetOf(T) Method (IEnumerable(T), IEnumerable(T), IEqualityComparer(T))

AlgorithmsIsSubsetOfT Method (IEnumerableT, IEnumerableT, IEqualityComparerT)

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: X3Platform.Collections
Assembly: X3Platform.Support (in X3Platform.Support.dll) Version: 1.0.0.0 (2.0.0.0)

Syntax

C++

Copy

public static bool IsSubsetOf<T>(
	IEnumerable<T> collection1,
	IEnumerable<T> collection2,
	IEqualityComparer<T> equalityComparer
)

public:
generic<typename T>
static bool IsSubsetOf(
	IEnumerable<T>^ collection1, 
	IEnumerable<T>^ collection2, 
	IEqualityComparer<T>^ equalityComparer
)

Parameters

collection1: Type: System.Collections.GenericIEnumerableT
The first collection.
collection2: Type: System.Collections.GenericIEnumerableT
The second collection.
equalityComparer: Type: System.Collections.GenericIEqualityComparerT
The IEqualityComparer<T> used to compare items for equality.

Type Parameters

T: [Missing <typeparam name="T"/> documentation for "M:X3Platform.Collections.Algorithms.IsSubsetOf``1(System.Collections.Generic.IEnumerable{``0},System.Collections.Generic.IEnumerable{``0},System.Collections.Generic.IEqualityComparer{``0})"]

Return Value

Type: Boolean
True if collection1 is a subset of collection2, considered as sets.

Exceptions

Exception	Condition
ArgumentNullException	collection1 or collection2 is null.

Remarks

If both collections are Set, Bag, OrderedSet, or OrderedBag collections, it is more efficient to use the IsSubsetOf method on that class.

Reference

Algorithms Class

IsSubsetOf Overload

X3Platform.Collections Namespace