c++-faq Archives - Page 7 of 8

Difference between private, public, and protected inheritance

What is the difference between public, private, and protected inheritance in C++? All of the questions I’ve found on SO deal with specific ...

April 14, 2022
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Where and why do I have to put the “template” and “typename” keywords?

In templates, where and why do I have to put typename and template on dependent names? What exactly are dependent names anyway? I ...

April 13, 2022
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What are rvalues, lvalues, xvalues, glvalues, and prvalues?

In C++03, an expression is either an rvalue or an lvalue. In C++11, an expression can be an: rvalue lvalue xvalue glvalue prvalue ...

April 12, 2022
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What is the difference between const int, const int const, and int const *?

I always mess up how to use const int*, const int * const, and int const * correctly. Is there a set of ...

April 11, 2022
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What is an undefined reference/unresolved external symbol error and how do I fix it?

What are undefined reference/unresolved external symbol errors? What are common causes and how to fix/prevent them? 3 37

April 11, 2022
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What is a lambda expression in C++11?

What is a lambda expression in C++11? When would I use one? What class of problem do they solve that wasn’t possible prior ...

April 11, 2022
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Why should I use a pointer rather than the object itself?

I’m coming from a Java background and have started working with objects in C++. But one thing that occurred to me is that ...

April 10, 2022
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What is move semantics?

I just finished listening to the Software Engineering radio podcast interview with Scott Meyers regarding C++0x. Most of the new features made sense ...

April 10, 2022
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What is a smart pointer and when should I use one?

What is a smart pointer and when should I use one? 1 14 UPDATE This answer is rather old, and so describes what ...

April 10, 2022
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Why can templates only be implemented in the header file?

Quote from The C++ standard library: a tutorial and handbook: The only portable way of using templates at the moment is to implement ...

April 10, 2022
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