Question

I’ve got an object like this:

Tuple<Question, Levels[]>

// question, { easy, medium, hard }

Levels is an enum with four options: Easy, Medium, Hard and Expert.

And I want that for each enum which contains the tuple, LINQ function deliver a Dictionary<Question, Levels>. For example

If my tuple has three levels, the dictionary should have three values,

// question, Easy
// question, Medium
// question, Hard

Answer 1

As others have noted the question isn’t very clear. I’ve made an attempt to show you various things that you might be wanting to do:

var stuff = new Tuple<Question, Levels[]>[] {
      // .... 
    };

var flattened = stuff.SelectMany(tup => 
     tup.Item2.Select(Level => new { tup.Question, Level }));

var grouped = flattened.GroupBy(flat => flat.Level);

// now you can do
var easyOnes = grouped[Levels.Easy];
var mediumOnes = grouped[Levels.Medium];