Class PropertyComparer<T, U>

A object comparer that can accept a lambda expression to compare properties.

Inheritance
object
PropertyComparer<T, U>
Implements
Namespace: CapyKit
Assembly: CapyKit.dll
Syntax
public class PropertyComparer<T, U> : IEqualityComparer<T>
Type Parameters
Name Description
T

Generic type parameter of the parent object.
U

Generic type parameter of the property value.
Examples

using System; using System.Collections.Generic; using System.Linq;

class Program { static void Main(string[] args) { var people = new List<Person> { new Person { Name = "Alice", Age = 30 }, new Person { Name = "Bob", Age = 30 }, new Person { Name = "Charlie", Age = 35 } };

    var comparer = new PropertyComparer<Person, int>(p => p.Age);
    var distinctPeople = people.Distinct(comparer).ToList();

    foreach (var person in distinctPeople)
    {
        Console.WriteLine($"{person.Name} - {person.Age}");
    }
}

}

class Person { public string Name { get; set; } public int Age { get; set; } }

Constructors

PropertyComparer(Func<T, U>)

Constructor.

Declaration
public PropertyComparer(Func<T, U> expression)
Parameters
Type Name Description
Func<T, U> expression

The expression.

Methods

Equals(T, T)

Determines whether the specified properties are equal.

Declaration
public bool Equals(T x, T y)
Parameters
Type Name Description
T x

The first object of type T to compare.
T y

The second object of type T to compare.
Returns
Type Description
bool

true if the specified objects are equal; otherwise, false.

GetHashCode(T)

Returns a hash code for the specified object.

Declaration
public int GetHashCode(T obj)
Parameters
Type Name Description
T obj

The object for which a hash code is to be returned.
Returns
Type Description
int

A hash code for the specified object.
Exceptions
Type Condition
ArgumentNullException

The type of obj is a reference type and obj is null.

Implements