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Errata for Chapter 9: Lambda expressions and expression trees

P232, listing 9.3: Missing semi-colon

The first line of listing 9.3 is this:

Func<stringint> returnLength

That's missing a semi-colon. It should actually be:

Func<stringint> returnLength;

P245, section 9.3.5: Typo in sample

The sample code on page 245 is incorrect. It should be this:

T runningTotal = initialValue;
foreach (T item in values)
   runningTotal = Operator.Add(runningTotal, item);

Note the second argument, which should be item, not values.

P254, section 9.5: Typo on last line

On the last line of page 254, "resticted" should be "restricted".