I\'ve got this pieceof code. It appears to dereference a null pointer here, but then bitwise-ANDs the result with unsigned int. I really don\'t understand the whole 开发者_如何学Gopart. What is it int
Is it safe to delete a NULL point开发者_运维百科er? And is it a good coding style?delete performs the check anyway, so checking it on your side adds overhead and looks uglier. A very good practice is
(C++/Qt) I have a smart pointer to a QObject. Let\'s say a QWeakPointer. For some external reason (something that might happen in another object or due to an event), it is possible that the pointed ob
I am overriding the onCreateDialog and onPrepareDialog methods or the Dialog class. I have followed the example from Reto Meier\'s Professional Android Application Development book, Chapter 5 to pull
Consider the following code: #include <iostream> struct foo { // (a): void bar() { std::cout << \"gman was here\" << std::endl; }
The standard says that dereferencing the null pointer leads to undefined behaviour. But what is \"the null pointer\"? In the following code, what we call \"the null pointer\":
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