someList.Sort((a, b) => a.Foo.CompareTo(b.Foo));

##</code><code>##

someList.Sort((a, b) => a.Foo <=> b.Foo);

##</code><code>##

var first = someList.Find(e => e.Foo >= bar);

##</code><code>##

@someList = sort { $a->Foo <=> $b->Foo } @someList;

##</code><code>##

@someList = sort { $a->Foo <=> $b->Foo || $a->Bar cmp $b->Bar } @someList;

##</code><code>##

someList.Sort(
    (a, b) =>
    {
        int rv = a.Foo.CompareTo(b.Foo);
        if (rv == 0)
        {
            rv = a.Bar.CompareTo(b.Bar);
        }
        return rv;
    }
);