Software pattern - interface, where

[Markus Freitag]

Hello!

When does it make sense to add the Where condition to classes?
Are there examples and simple explanations? Thanks in advance.

I found this on google.


public class GenericCompare<T> : IEqualityComparer<T> where T : class
{
private Func<T, object> _expr { get; set; }
public GenericCompare(Func<T, object> expr)
{
this._expr = expr;
}
public bool Equals(T x, T y)
{
var first = _expr.Invoke(x);
var sec = _expr.Invoke;
if (first != null && first.Equals(sec))
return true;
else
return false;
}
public int GetHashCode(T obj)
{
return obj.GetHashCode();
}
}


Greetings Markus

Continue reading...