Linq - How can I run each item through a function and then pick the item with the highest function result

Question

What I want to do is basically

var max = things.Select(t => ExpensiveFunc(t)).Max();
var ThingWithMaxResult = things.Where(t => ExpensiveFunc(t) == max).First();

But I don't want to have to run the ExpensiveFunc twice on each element.

I am learning LINQ so I would like to know the LINQ way of doing this. Otherwise I would normally create an array of things and results, then just pick the array with the highest result.

Answer 1

You can order by the function call (descending) and take the first one:

var max = things.OrderByDescending(ExpensiveFunc).First();