Errata

If we implemented IntStack with a linked list, the iterator would contain a pointer to the current element "instead of a count"

This should read "instead of an index of the current item in the stack".

The book provides a very good approach to learning the language. I have found it to be very useful in gaining clear and concise insight into the basic structure of the language. Beginning with a knowledge of the "C" programming language, it offers a very efficient elaboration of the most pertinent details, (of C++) from which more
detailed study can form its basis. Of all the books reviewed, this book permits C++ to be understood the most quickly. I really needed a book such as this one so that I can form the basic categories to store the huge amount of details associated with learning this language.
Great Job !!!

Note from the Author or Editor:
I agree.

This "minor technical mistake" is a publishing error, not an error in C++.
The word "member" is in mono-spaced font when it should be in the normal font

There is an extra comma after the last item in the member initialization list:

frameThickness(source.frameThickness), // data member

should read:

frameThickness(source.frameThickness) // data member

changed to "printer operator operator<<()" ("operator<<()" is still
in constant width.)

void Id::operator=(Id src) {
should be
void Id::operator=(Id &src) {

if (this == ) return; // don't assign to self
should be
if (this == &src) return; // don't assign to self

Id::Id(Id src) {
should be
Id::Id(Id &src) {

void Id::operator=(Id &src) {
deleteVal();
newVal(src.value);
}

Has been changed to:

void Id::operator=(Id &src) {
if (this == &src) return; // don't assign to self
deleteVal();
newVal(src.value);
}

void Id::operator=(Id src) {
should be
void Id::operator=(Id &src) {

Id::Id(Id src) {
should be
Id::Id(Id &src) {

*os "Id{" data "-->";
should be
*os << "Id{" << data << "-->";

*os "(null)";
should be
*os << "(null)";

*os *data";
should be
data->print(os);


To get the same output like the end of this page,
we should modify the original print function to:

void IdData::print(ostream *os)
{
*os << "IdData{" << value << ", refCount = " << refCount << '}';
}

The printing operator operator() is identical to what you've....
should be
The printing operator operator<<() is identical to what you've....

void Id::set(char *idStr) {
if (data->refCount > 1)
attachData(0);
data->set(idStr);
}

Has been changed to:

void Id::set(char *idStr) {
if (data->refCount > 1) {
detachData();
attachData(0);
}
data->set(idStr);
}

id1 = Id{0x22640-->IdData{0, refCount = 2}}
id2 = Id{0x22660-->IdData{0, refCount = 2}}
id1 = Id{0x22640-->IdData{12345, refCount = 1}}
id2 = Id{0x22640-->IdData{12345, refCount = 2}}

Has been changed to:

id1 = Id{0x22640-->IdData{0, refCount = 2}}
id2 = Id{0x22640-->IdData{0, refCount = 2}}
id1 = Id{0x22660-->IdData{12345, refCount = 1}}
id2 = Id{0x22660-->IdData{12345, refCount = 2}}

"Doug Brown is a consultant/contractor in Beavertown, Oregon. He has
been developing software for circuit simulation, synthesis, and testing
since 1977. Doug coauthored lex & yacc, another O'Reilly & Associates
Nutshell Handbook. He received an M.S. in electrical engineering from
the Univeristy of Illinois at Urbana-Champaign in 1976."