EqCmp

EqCmp

A small C# library for constructing instances of IEqualityComparer<T> using a succinct API

Usage

var comparer = EqCmp<Foo>.Create(x => (x.Bar, x.Baz));

var foo1 = new Foo { Bar = 1, Baz = "a" };
var foo2 = new Foo { Bar = 1, Baz = "a" };
var foo3 = new Foo { Bar = 2, Baz = "b" };

var set = new HashSet<Foo>(comparer);
set.Add(foo1);
set.Add(foo2);
set.Add(foo3);

Console.WriteLine(set.Count); // 2

class Foo
{
    public int Bar { get; set; }
    public string Baz { get; set; }
}