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errata for C++ Common Knowledge by Stephen C. Dewhurst

(2nd printing)

Stephen's errata page.

where	erratum	correct
page 69	missing destructor for class Button	~Button {... delete action_; ...} otherwise we have a memory leak

page 70: no need to new PlayMusic because it is cloned inside of setAction

auto_ptr<PlayMusic> song (new PlayMusic ("AnokoNoNamaewa.mp3"));
b->setAction (song.get ());

instead one could write

b->setAction (&PlayMusic ("AnokoNoNamaewa.mp3"));

probably not all compilers are too excited about taking a reference of a temporary but it should be ok, or alternatively

PlayMusic pm ("AnokoNoNamaewa.mp3");
b->setAction (&pm);

page 217

typedef True char;

typedef char True;