C# in Depth

Incorrect operators in tuple != expansion (Chapter 11)

On page 338, there's an incorrect expansion of the != operator applied to tuples. The != operator will return true if any of the pairwise element comparisons find a difference, so the expansion of this:

Console.WriteLine(t1 != t2);

should be:

Console.WriteLine(t1.Item1 != t2.Item1 ||
                  t1.Item2 != t2.Item2 ||
                  t1.Item3 != t2.Item3)

The difference is the use of the || operator, where in the book I've got the && operator.

All errata