Why is List<>.OrderBy LINQ faster than IComparable+List<>.Sort in Debug mode?

Question

I was interested in whether it would be faster to sort my classes using LINQ, or by implementing the IComparable interface and List.Sort. I was quite surprised when the LINQ cod

Answer 1

For me, I will use Linq with IComparable(when this is the most or only way to sort). In this case, item is a TestSort: IComparable

var sorted = ll.OrderBy(item => item); // This automatically used age to compare, as it's defined in CompareTo

ll can be any IEnumerable: List, Array, etc.

Also in CompareTo you can have multiple way to compare... for instance, you can do something like this:

  public int CompareTo(TestSort other) {
        return this.age != other.age ? this.age.CompareTo(other.age) : this.dateOfBirth.CompareTo(other.dateOfBirth);
    }