On page 26 [Wrong result for expression]:
Row five of the operator table says that TRUE \/ FALSE is FALSE. It should be TRUE.
On page 27 [Wrong result for expression]:
The range operator expression says that evaluating 1..3 will output {1, 2, 3}. TLC will instead represent it as 1..3. A more correct expression would be >> 1..3 = {1, 2, 3}, which would have value TRUE.
On page 28 [Wrong expression]:
Row five of the operator table says that >> <<1, 1, 1, 1>> will output 4. The expression is missing the Len operator. The correct expression should be >> Len(<<1, 1, 1, 1>>)
On page 43 [Unmarked change]:
The first three lines of the spec should be bolded.
On page 45 [Wrong expression]:
The last expression on the page >> {1, 2} - 2, is an em-dash instead of a double minus. The correct expression is >> {1, 2} -- 2.
On page 66 [Missing step, operator]:
The book adds constants to the knapsack spec but does not explicitly say to remove the corresponding operators. Additionally, we need to update ItemParams. The new definition is
ItemParams == [size: SizeRange, value: ValueRange]This operator can also be found on page 68.
On page 74-75 [Text change]:
On some computers the path might be Properties, not Preferences.
[I believe this is OS specific, but haven't yet confirmed.]
On page 76 [Missing step]:
Do not instantiate instances of Point in the Point model itself.
On page 93 [Constant assignment mismatch]:
If you follow the instructions in the Symmetry Sets box, you will have 3 symmetric actors in your model. The rest of the main text assumes you have 2 nonsymmetric actors.
On page 115 [Missing import]:
The spec for max says EXTENDS Sequences. It should be EXTENDS Sequences, Integers.