score:1

Accepted answer
list.cartitems = l.first();

score:0

var t = enumerable.range(1, 10).select(i => new { id = i % 3, q = 1 }).tolist();
var b = from i in t
        group i by i.id into g
        select new { id = g.key, q = g.count() };
t = b.tolist();

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