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c++ Programming Glossary: membersWhy isn't sizeof for a struct equal to the sum of sizeof of each member? http://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member for a structure than the total sizes of the structure's members c c sizeof c faq share improve this question This is because.. to insert unused memory into a structure so that data members are optimally aligned for better performance. Many processors..
What is an undefined reference/unresolved external symbol error and how do I fix it? http://stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-do-i-fix variable or function. Common issues with class type members Template implementations not visible. Symbols were defined in..
What is the slicing problem in C++? http://stackoverflow.com/questions/274626/what-is-the-slicing-problem-in-c B public A int bar So an object of type B has two data members foo and bar Then if you were to write this B b A a b Then the..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom our case but good practice using std swap by swapping the members of two classes the two classes are effectively swapped swap..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three 12 §1 By default copying an object means copying its members The implicitly defined copy constructor for a non union class.. we did not acquire any resources in the constructor. The members' destructors are implicitly called after the person destructor.. for class X calls the destructors for X's direct ... members n3126.pdf 12.4 §6 Managing resources So when should we declare..
What are Aggregates and PODs and how/why are they special? http://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special constructors 12.1 no private or protected non static data members clause 11 no base classes clause 10 and no virtual functions.. by the user No private or protected non static data members . You can have as many private and protected member functions.. as well as as many private or protected static data members and member functions as you like and not violate the rules for..
http://stackoverflow.com/questions/4421706/operator-overloading syntax specifies no restriction on whether they should be members or non members. Since they change their left argument they alter.. no restriction on whether they should be members or non members. Since they change their left argument they alter the stream.. should according to the rules of thumb be implemented as members of their left operand ™s type. However their left operands are..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration is that this type exists it knows nothing about its size members or methods. This is why it's called an incomplete type . Therefore.. references to the incomplete type but without using its members void f3 X X X f4 X f5 What you cannot do with an incomplete..
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c directly. A pointer to a class struct uses to access it's members whereas a reference uses a . . A pointer is a variable that..
Do the parentheses after the type name make a difference with new? http://stackoverflow.com/questions/620137/do-the-parentheses-after-the-type-name-make-a-difference-with-new a POD plain old data or if it's a class that contains POD members and is using a compiler generated default constructor. In C..
OpenGL two different 3d rendering picture control on single MFC dialog not working http://stackoverflow.com/questions/12227586/opengl-two-different-3d-rendering-picture-control-on-single-mfc-dialog-not-work gl glu.h class COpenGLControl public CWnd public Public Members UINT_PTR m_unpTimer View information variables float m_fLastX.. float m_fRotY bool m_bIsMaximized private Private Members Window information CWnd hWnd HDC hdc HGLRC hrc int m_nPixelFormat..
C++ Static member initalization (template fun inside) http://stackoverflow.com/questions/1819131/c-static-member-initalization-template-fun-inside on stackoverflow Point of Instantiation of Static Data Members . I think it's worth reducing the test case and considering..
Private and Protected Members : C++ http://stackoverflow.com/questions/224966/private-and-protected-members-c and Protected Members C Can someone enlighten me as to the difference between private..
Why aren't static const floats allowed? http://stackoverflow.com/questions/2454019/why-arent-static-const-floats-allowed source file not the header . C Standard Section 9.2 Class Members item 4 A member declarator can contain a constant initializer.. enumeration type see 9.4.2. Section 9.4.2 Static Data Members item 2 If a static data member is of const integral or const..
http://stackoverflow.com/questions/2632021/can-sizeof-return-0-zero in GCC the extension is documented in Structures with No Members which says GCC permits a C structure to have no members struct..
Maximum number of parameters in function declaration http://stackoverflow.com/questions/4582012/maximum-number-of-parameters-in-function-declaration 16 384 . Direct base classes for a single class 1024 . Members declared in a single class 4 096 . Final overriding virtual..
What are access specifiers? Should I inherit with private, protected or public? http://stackoverflow.com/questions/5447498/what-are-access-specifiers-should-i-inherit-with-private-protected-or-public All Public members of the Base Class become Public Members of the derived class All Protected members of the Base Class.. All Protected members of the Base Class become Protected Members of the Derived Class. i.e. No change in the Access of the members... All Public members of the Base Class become Private Members of the Derived class All Protected members of the Base Class..
Does a c++ struct have a default constructor? http://stackoverflow.com/questions/8280023/does-a-c-struct-have-a-default-constructor and a has indeterminate value. void func _bar_ a Members are NOT initialized. _bar_ b _bar_ Members are zero initialized.. func _bar_ a Members are NOT initialized. _bar_ b _bar_ Members are zero initialized _bar_ aP new _bar_ Members are NOT initialized... b _bar_ Members are zero initialized _bar_ aP new _bar_ Members are NOT initialized. _bar_ bP new _bar_ Members are zero initialized..
What are the differences between struct and class in C++ http://stackoverflow.com/questions/92859/what-are-the-differences-between-struct-and-class-in-c defined with the keyword class are private by default. Members of a class defined with the keywords struct or union are public..
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