Another missing method for IEnumerable<T>
Currently there are two overloads for OrderBy on Enumerable
- OrderBy(this IEnumerable source, Func<TSource, TKey> keySelector)
- OrderBy(this IEnumerable source, Func<TSource, TKey> keySelector, IComparer comparer)
Because i don’t want to implement an IComparer each time i have implemented the following class
class DelegateComparer<T> : IComparer<T>
{
public Func<t, T, int> CompareFunction { get; set; }
public DelegateComparer(Func<t, T, int> compareFunction)
{
CompareFunction = compareFunction;
}
public int Compare(T x, T y)
{
return CompareFunction(x, y);
}
}
And now i can define a nice extension method:
public static IOrderedEnumerable<tsource> OrderBy<tsource, TKey>(this IEnumerable<tsource> source, Func<tsource, TKey> keySelector, Func<tkey, TKey, int> compareFunction)
{
var comparer = new DelegateComparer<tkey>(compareFunction);
return source.OrderBy(keySelector, comparer);
}