EqualityComparer<T> Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Provides a base class for implementations of the IEqualityComparer<T> generic interface.
Assembly: mscorlib (in mscorlib.dll)
The EqualityComparer<T> type exposes the following members.
| Name | Description | |
|---|---|---|
 | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
| Equals(T, T) | When overridden in a derived class, determines whether two objects of type T are equal. |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode() | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetHashCode(T) | When overridden in a derived class, serves as a hash function for the specified object for hashing algorithms and data structures, such as a hash table. |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
  | IEqualityComparer::Equals | Determines whether the specified objects are equal. |
| IEqualityComparer::GetHashCode | Returns a hash code for the specified object. |
Derive from this class to provide a custom implementation of the IEqualityComparer<T> generic interface for use with collection classes such as the Dictionary<TKey, TValue> generic class, or with methods such as List<T>::Sort.
The Default property checks whether type T implements the System::IEquatable<T> generic interface and if so returns an EqualityComparer<T> that uses that implementation. Otherwise it returns an EqualityComparer<T> that uses the overrides of Object::Equals and Object::GetHashCode provided by T.