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What is array to pointer decay?
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It's said that arrays "decay" into pointers. A C++ array declared as int numbers [5] cannot be re-pointed, i.e. you can't say numbers = 0x5a5aff23. More importantly the term decay signifies loss of type and dimension; numbers decay into int* by losing the dimension inform...
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
While browsing through gcc's current implementation of new C++11 headers, I stumbled upon "......" token. You can check, that the following code compiles fine [via ideone.com].
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Copy constructor for a class with unique_ptr
...for a class that has a unique_ptr member variable? I am only considering C++11.
6 Answers
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Difference between `constexpr` and `const`
...sert are allowed. (= default and = delete are allowed, too, though.)
As of C++14, the rules are more relaxed, what is allowed since then inside a constexpr function: asm declaration, a goto statement, a statement with a label other than case and default, try-block, the definition of a variable of no...
How does Go compile so quickly?
...e talk Go at Google, which compares the dependency analysyis approach of C/C++ and Go.
That is the main reason of fast compilation. And this is by design.
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Can inner classes access private variables?
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Technically in the current C++ standard, a nested class does NOT have special access to its enclosing class. See sec 11.8.1 of the standard. HOWEVER see also this standard defect: open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#45
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Why I cannot cout a string?
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+1: Many STL headers in Visual C++ (including <iostream>) pull in a definition of the std::basic_string class (because they indirectly include the implementation-defined <xstring> header (never include that directly)). While that allows you to ...
When should I use the new keyword in C++?
I've been using C++ for a short while, and I've been wondering about the new keyword. Simply, should I be using it, or not?
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Inherit from a generic base class, apply a constraint, and implement an interface in C#
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C++ requires that a class declaration end in a semicolon. Many C# developers come from a C++ background; sometimes their fingers put the semicolon in without their brains getting involved. :-) There are a number of constructs...
How to track down a “double free or corruption” error
When I run my (C++) program it crashes with this error.
8 Answers
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