Question

Simple, I have a struct like this:

struct bla{
  string name;
  float depth;
}

I have an bla array, and I want to sort by depth, being the greatest depth first.
What should the delegate do/return? I cant find any concrete example.

Answer 1

You can use the overload of Array.Sort which takes a Comparison<T>:

bla[] blas = new[] { 
    new bla() { name = "3", depth = 3 }, 
    new bla() { name = "4", depth = 4 }, 
    new bla() { name = "2", depth = 2 }, 
    new bla() { name = "1", depth = 1 }, 
};

Array.Sort<bla>(blas, (x,y) => x.depth.CompareTo(y.depth));

On this way you sort the original array instead of creating new one.