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Errata for Design Patterns
Errors and the printings in which they were fixed.
16th Printing
(December 1998)
-
p. 142
-
Consequences, item 1: Change "Adapter" to "Adaptee" in the
following phrase: "...by committing to a concrete Adapter
class."
-
p. 328
-
In the implementation of DerivedClass::Operation(), the
comment should come after the call to
ParentClass::Operation():
void DerivedClass::Operation () {
ParentClass::Operation();
// DerivedClass extended behavior
}
14th Printing
(December 1997)
-
p. 69
-
In the code for PreorderIterator::Next(), the statement
_iterators.Push(i); was omitted. It should come
immediately after i->First(); like so:
void PreorderIterator::Next () {
Iterator* i =
_iterators.Top()->CurrentItem()->CreateIterator();
i->First();
_iterators.Push(i);
while (
_iterators.Size() > 0 && _iterators.Top()->IsDone()
) {
delete _iterators.Pop();
_iterators.Top()->Next();
}
}
10th Printing
(April 1997)
-
p. 94
-
"^ Maze new addRoom: r1; addRoom: r2; yourself" ->
should be
"^ Maze new addRoom: room1; addRoom: room2; yourself"
-
pp. 144, 145
-
The discussion on pluggable adapters was improved. Here are the updated pages (12KB PDF).
-
p. 253
-
if (strcmp(name, _name) != 0) {
should be
if (strcmp(name, _name) == 0) {
5th Printing
(December 1995)
-
p. 94
-
createMaze: aFactory
| room1 room2 aDoor |
room1 = (aFactory make: #room) number: 1.
room2 = (aFactory make: #room) number: 2.
aDoor = (aFactory make: #door) from: room1 to: room2.
...
should have had assignment statements
createMaze: aFactory
| room1 room2 aDoor |
room1 := (aFactory make: #room) number: 1.
room2 := (aFactory make: #room) number: 2.
aDoor := (aFactory make: #door) from: room1 to: room2.
-
p. 300
- The arrow labeled "subjects" in the diagram should have a black ball
on the end.
3rd Printing
(May 1995)
-
p. 297
-
"...to let the observer know which observer is sending
the notification."
should be
"...to let the observer know which subject is sending
the notification."
2nd Printing
(December 1994)
-
p. 12, inside-back cover
-
The "spaghetti" diagram changed slightly to include an arrow
labeled "sharing states" from State to Flyweight.
-
pp. 175, 195, 196, 202
-
Some lines on these pages did not print correctly. (Well they
did, but with width 1 at 2200 dpi. If you squint really hard
you might just be able to see them!) Here's what they should look like (24KB
PDF).
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