SortedSet<T>.CreateSetComparer Method

Definition

Namespace:

System.Collections.Generic

Assemblies:

netstandard.dll, System.Collections.dll

Returns an IEqualityComparer object that can be used to create a collection that contains individual sets.

Overloads

CreateSetComparer()	Returns an IEqualityComparer object that can be used to create a collection that contains individual sets.
CreateSetComparer(IEqualityComparer<T>)	Returns an IEqualityComparer object, according to a specified comparer, that can be used to create a collection that contains individual sets.

CreateSetComparer()

Source:

SortedSet.cs

Returns an IEqualityComparer object that can be used to create a collection that contains individual sets.

C#

public static System.Collections.Generic.IEqualityComparer<System.Collections.Generic.SortedSet<T>> CreateSetComparer();

Returns

IEqualityComparer<SortedSet<T>>

A comparer for creating a collection of sets.

Remarks

The IEqualityComparer object checks for equality at only one level; however, you can chain together comparers at additional levels to perform deeper equality testing.

Calling this method is an O(1) operation.

CreateSetComparer(IEqualityComparer<T>)

Source:

SortedSet.cs

Returns an IEqualityComparer object, according to a specified comparer, that can be used to create a collection that contains individual sets.

C#

public static System.Collections.Generic.IEqualityComparer<System.Collections.Generic.SortedSet<T>> CreateSetComparer(System.Collections.Generic.IEqualityComparer<T>? memberEqualityComparer);

Parameters

memberEqualityComparer

IEqualityComparer<T>

The comparer to use for creating the returned comparer.

Returns

IEqualityComparer<SortedSet<T>>

A comparer for creating a collection of sets.

Examples

The following example uses the CreateSetComparer method to create a set of sets. This code example is part of a larger example provided for the SortedSet<T> class.

C#

// Create a set of the sets.
IEqualityComparer<SortedSet<string>> comparer =
    SortedSet<string>.CreateSetComparer();

var allMedia = new HashSet<SortedSet<string>>(comparer);
allMedia.Add(mediaFiles1);
allMedia.Add(mediaFiles2);

Remarks

The memberEqualityComparer and the current SortedSet<T> must have the same definition of equality.

You can use the comparer returned by this method in the SortedSet<T>.SortedSet<T>(IEnumerable<T>, IComparer<T>) constructor to create a hash table of individual sets.