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c++ Programming Glossary: declarehttp://stackoverflow.com/questions/1008019/c-singleton-design-pattern Constructor the brackets are needed here. Dont forget to declare these two. You want to make sure they are unaccessable otherwise.. threading implications to singletons Singleton instance declared as static variable of GetInstance method See this article that..
Do-While and if-else statements in C/C++ macros http://stackoverflow.com/questions/154136/do-while-and-if-else-statements-in-c-c-macros code that needs to go in its own block say for example to declare local variables. In the most general case the solution is to.. should be argued at this point that it would be better to declare BAR as an actual function not a macro. In summary the do .....
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three and the copy assignment operator When do I need to declare them myself How can I prevent my objects from being copied .. in some valid state that needs to be dealt with. Since we declared neither the copy constructor nor the assignment operator nor.. member functions. Note The implementation will implicitly declare these member functions for some class types when the program..
When to use virtual destructors? http://stackoverflow.com/questions/461203/when-to-use-virtual-destructors Do some important cleanup Here you'll notice that I didn't declare Base's destructor to be virtual. Now let's have a look at the..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration Put yourself in the compiler's position when you forward declare a type all the compiler knows is that this type exists it knows.. an incomplete type . Therefore you cannot use the type to declare a member or a base class since the compiler would need to know.. it as a base class class Foo X compiler error Use it to declare a member class Foo X m compiler error Define functions or methods..
Where and why do I have to put the “template” and “typename” keywords? http://stackoverflow.com/questions/610245/where-and-why-do-i-have-to-put-the-template-and-typename-keywords will be parsed as a declaration and semantically it will declare f as a pointer variable . However if it's a non type it will..
Difference between 'struct' and 'typedef struct' in C++? http://stackoverflow.com/questions/612328/difference-between-struct-and-typedef-struct-in-c Foo is only defined in the tag namespace. You'd have to declare it as struct Foo x Any time you want to refer to a Foo you'd.. namespace both refer to the same thing and you can freely declare objects of type Foo without the struct keyword. The construct.. declaration and typedef. Finally typedef struct ... Foo declares an anonymous structure and creates a typedef for it. Thus with..
Why can't variables be declared in a switch statement? http://stackoverflow.com/questions/92396/why-cant-variables-be-declared-in-a-switch-statement can't variables be declared in a switch statement I've always wondered this why can't.. switch statement I've always wondered this why can't you declare variables after a case label in a switch statement In C you.. after a case label in a switch statement In C you can declare variables pretty much anywhere and declaring them close to first..
What is the state of C++ refactor support in Eclipse? http://stackoverflow.com/questions/130913/what-is-the-state-of-c-refactor-support-in-eclipse Tools eclipse project 5.0 has a bunch of new refactorings Declare Method Extract Baseclass Extract Constant Extract Method Extract..
How to make generic computations over heterogeneous argument packs of a variadic template function? http://stackoverflow.com/questions/14261183/how-to-make-generic-computations-over-heterogeneous-argument-packs-of-a-variadic FUNCTIONS FOR EXTRACTING THE n th TYPE OF A PARAMETER PACK Declare primary template template int I typename... Ts struct nth_type_of.. type of non homogeneous parameter packs struct null_type Declare primary template template typename... Ts struct homogeneous_type.. for generating index ranges MIN MAX namespace detail Declare primary template for index range builder template unsigned MIN..
Variable length arrays in C++? http://stackoverflow.com/questions/1887097/variable-length-arrays-in-c the following syntax is valid void foo int n int values n Declare a variable length array This seems like a pretty useful feature.. array like void foo int x int y int z int values x y z Declare a variable length array the vector version becomes pretty clumsy..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers const char_type _delim bool _insertDelim #if _MSC_VER 1400 Declare pretty_ostream_iterator as checked template typename T typename..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration can and cannot do. What you can do with an incomplete type Declare a member to be a pointer or a reference to the incomplete type.. or a reference to the incomplete type class Foo X pt X pt Declare functions or methods which accept return incomplete types void..
C++ static polymorphism (CRTP) and using typedefs from derived classes http://stackoverflow.com/questions/6006614/c-static-polymorphism-crtp-and-using-typedefs-from-derived-classes and functions from the derived class through the traits. Declare a base_traits traits class template template typename derived_t.. value_type value_type derived_foo return value_type Declare and define a base_traits specialization for derived template..
Disabling “bad function cast” warning http://stackoverflow.com/questions/6676764/disabling-bad-function-cast-warning this byte Now you can smell the difference between them. Declare pointer to member function as void MyClass ptr byte MyClass..
Compile a DLL in C/C++, then call it from another program http://stackoverflow.com/questions/847396/compile-a-dll-in-c-c-then-call-it-from-another-program advice but I tried loading it with VB6 like this Public Declare Function add2 Lib C c dll mydll.dll num As Integer As Integer.. Wl add stdcall alias and use this API call in VB6 Public Declare Function add2 Lib C c dll mydll _ ByVal num As Integer As Integer..
I don't want my Excel Add-In to return an array (instead I need a UDF to change other cells) http://stackoverflow.com/questions/8520732/i-dont-want-my-excel-add-in-to-return-an-array-instead-i-need-a-udf-to-change The code below must be placed in a regular module. Private Declare Function SetTimer Lib user32 _ ByVal HWnd As Long _ ByVal nIDEvent.. As Long _ ByVal lpTimerFunc As Long _ As Long Private Declare Function KillTimer Lib user32 _ ByVal HWnd As Long _ ByVal nIDEvent..
C++ templates that accept only certain types http://stackoverflow.com/questions/874298/c-templates-that-accept-only-certain-types it for the valid types template typename T my_template Declare but don't define int is a valid type template my_template int..
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