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c++ Programming Glossary: declarationsIn C++ source, what is the effect of extern “C”? http://stackoverflow.com/questions/1041866/in-c-source-what-is-the-effect-of-extern-c explicitly or use a block to group a sequence of declarations definitions to have a certain linkage extern C void foo int..
What is the difference between a definition and a declaration? http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration needs to accept references to that identifier. These are declarations extern int bar extern int g int int double f int double extern.. int double f int double extern can be omitted for function declarations class foo no extern allowed for class declarations A definition.. declarations class foo no extern allowed for class declarations A definition actually instantiates implements this identifier...
Why aren't my include guards preventing recursive inclusion and multiple symbol definitions? http://stackoverflow.com/questions/14909997/why-arent-my-include-guards-preventing-recursive-inclusion-and-multiple-symbol What do I need to do to solve my problem You need forward declarations . In fact the definition of class A is not required in order.. effectively express the dependency of B on A using forward declarations whenever possible practical is also considered to be a good.. definition of a base class visible and will use forward declarations whenever possible practical. SECOND QUESTION Why aren't include..
Unnamed/anonymous namespaces vs. static functions http://stackoverflow.com/questions/154469/unnamed-anonymous-namespaces-vs-static-functions of objects functions and anonymous unions not to type declarations. Edit The decision to deprecate this use of the static keyword..
http://stackoverflow.com/questions/162941/why-use-pointers is little difference between an array and a pointer. These declarations are both the same char a Hello char a Hello You can reach any..
Best open XML parser for C++ [closed] http://stackoverflow.com/questions/170686/best-open-xml-parser-for-c is undesired. Limitations The parser ignores DOCTYPE declarations. There is no support for XML namespaces. The parser does not..
What is the proper declaration of main? http://stackoverflow.com/questions/4207134/what-is-the-proper-declaration-of-main violated rule concerning the main function . There are two declarations of main that must be allowed int main 1 int main int char 2..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers iostream #include utility #include tuple namespace std Pre declarations of container types so we don't actually have to include the.. std tr1 true_type #endif _MSC_VER 1400 namespace std Pre declarations of container types so we don't actually have to include the..
“using namespace” in c++ headers http://stackoverflow.com/questions/5849457/using-namespace-in-c-headers detail classes within a library you can use forward declarations instead of #include because you have full control over the definition..
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 be a nested class or typedef. Dependencies In template declarations some constructs have different meanings depending on what template.. derive_from_Has_type typename SomeBase T type In using declarations it's not possible to use template after the last and the C committee..
Difference between 'struct' and 'typedef struct' in C++? http://stackoverflow.com/questions/612328/difference-between-struct-and-typedef-struct-in-c in the tag namespace. In C all struct union enum class declarations act like they are implicitly typedef 'ed as long as the name..
What is the difference between char a[] = “string”; and char *p = “string”; http://stackoverflow.com/questions/9460260/what-is-the-difference-between-char-a-string-and-char-p-string depending on whether x is an array or a pointer. Given the declarations above when the compiler sees the expression a 3 it emits code..
Understanding the difference between f() and f(void) in C and C++ once and for all [duplicate] http://stackoverflow.com/questions/13319492/understanding-the-difference-between-f-and-fvoid-in-c-and-c-once-and-for-a just want to make sure I understand it correctly. For C Declarations void f and void f void mean precisely the same thing the function.. void f int a int b float c Declaration and protoype Declarations that aren't prototypes are holdovers from pre ANSI C from the..
What are declarations and declarators and how are their types interpreted by the standard? http://stackoverflow.com/questions/13808932/what-are-declarations-and-declarators-and-how-are-their-types-interpreted-by-the this question I refer to the C 11 standard in this post Declarations Declarations of the type we're concerned with are known as simple.. I refer to the C 11 standard in this post Declarations Declarations of the type we're concerned with are known as simple declaration..
Dependent name resolution & namespace std / Standard Library http://stackoverflow.com/questions/16548379/dependent-name-resolution-namespace-std-standard-library names names from the following sources are considered Declarations that are visible at the point of definition of the template... are visible at the point of definition of the template. Declarations from namespaces associated with the types of the function arguments..
When instantiating a template, should members of its incomplete argument types be visible? http://stackoverflow.com/questions/17478621/when-instantiating-a-template-should-members-of-its-incomplete-argument-types-b names names from the following sources are considered Declarations that are visible at the point of definition of the template...
Overloading operator<< for a templated class http://stackoverflow.com/questions/1810753/overloading-operator-for-a-templated-class file These two methods are in the class of the binary tree Declarations void streamIND ostream const BinaryTree T friend ostream operator..
What are some techniques for limiting compilation dependencies in C++ projects? http://stackoverflow.com/questions/188449/what-are-some-techniques-for-limiting-compilation-dependencies-in-c-projects c dependencies share improve this question Forward Declarations Abstract Interfaces The Pimpl Idiom share improve this answer..
How can I avoid including class implementation files? http://stackoverflow.com/questions/2037880/how-can-i-avoid-including-class-implementation-files including a short program to generate include guards . Declarations Classes functions objects and templates may be declared almost..
Is the return type part of the function signature? http://stackoverflow.com/questions/290038/is-the-return-type-part-of-the-function-signature There are two layers that have to be considered Declarations Entities The so called function declaration may declare a function..
Why use #ifndef CLASS_H and #define CLASS_H in .h file but not in .cpp? http://stackoverflow.com/questions/3246803/why-use-ifndef-class-h-and-define-class-h-in-h-file-but-not-in-cpp you see this in .h file #ifndef FILE_H #define FILE_H ... Declarations etc here ... #endif This is a preprocessor technique of preventing..
What techniques can be used to speed up C++ compilation times? http://stackoverflow.com/questions/373142/what-techniques-can-be-used-to-speed-up-c-compilation-times the amount of recompilation that needs to be done. Forward Declarations Wherever possible use forward declarations . If the compiler..
Is the typedef-name optional in a typedef declaration? http://stackoverflow.com/questions/6399898/is-the-typedef-name-optional-in-a-typedef-declaration In ISO IEC 9899 1999 that's the C standard we find §6.7 Declarations Syntax declaration declaration specifiers init declarator list.. in C is definitely different from the C specification. §7 Declarations Declarations specify how names are to be interpreted. Declarations.. different from the C specification. §7 Declarations Declarations specify how names are to be interpreted. Declarations have the..
What restrictions does ISO C++03 place on structs defined at function scope? http://stackoverflow.com/questions/6415509/what-restrictions-does-iso-c03-place-on-structs-defined-at-function-scope Here is a little more reference from IBM documentation 2. Declarations in a local class can only use type names enumerations static..
Is there a library that provides a (directed) hypergraph implementation in C++? http://stackoverflow.com/questions/8348459/is-there-a-library-that-provides-a-directed-hypergraph-implementation-in-c without warnings on MSVC10 and GCC http ideone.com oj46o . Declarations #include map #include functional #include memory template class..
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