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  2. static (keyword) - Wikipedia

    en.wikipedia.org/wiki/Static_(keyword)

    In C++ (not C), the static keyword can also be used to declare a member variable in a class to have static storage duration as well, independent from the storage duration of the class object itself, and such a variable must be defined outside the class. The effect is that the variable is shared among all class instances, becoming a class member ...

  3. Static library - Wikipedia

    en.wikipedia.org/wiki/Static_library

    Static libraries can be easily created in C or in C++. These two languages provide storage-class specifiers for indicating external or internal linkage, in addition to providing other features. To create such a library, the exported functions/procedures and other objects variables must be specified for external linkage (i.e. by not using the C ...

  4. Static variable - Wikipedia

    en.wikipedia.org/wiki/Static_variable

    In computer programming, a static variable is a variable that has been allocated "statically", meaning that its lifetime (or "extent") is the entire run of the program. This is in contrast to shorter-lived automatic variables, whose storage is stack allocated and deallocated on the call stack; and in contrast to dynamically allocated objects, whose storage is allocated and deallocated in heap ...

  5. Curiously recurring template pattern - Wikipedia

    en.wikipedia.org/wiki/Curiously_recurring...

    Some use cases for this pattern are static polymorphism and other metaprogramming techniques such as those described by Andrei Alexandrescu in Modern C++ Design. [7] It also figures prominently in the C++ implementation of the Data, Context, and Interaction paradigm. [8]

  6. C++ - Wikipedia

    en.wikipedia.org/wiki/C++

    In 1989, C++ 2.0 was released, followed by the updated second edition of The C++ Programming Language in 1991. [32] New features in 2.0 included multiple inheritance, abstract classes, static member functions, const member functions, and protected members. In 1990, The Annotated C++ Reference Manual was published. This work became the basis for ...

  7. Singleton pattern - Wikipedia

    en.wikipedia.org/wiki/Singleton_pattern

    The instance is usually stored as a private static variable; the instance is created when the variable is initialized, at some point before when the static method is first called. This C++23 implementation is based on the pre-C++98 implementation in the book [citation needed].

  8. Class variable - Wikipedia

    en.wikipedia.org/wiki/Class_variable

    Thus in some languages, static member variable or static member function are used synonymously with or in place of "class variable" or "class function", but these are not synonymous across languages. These terms are commonly used in Java , C# , [ 5 ] and C++ , where class variables and class methods are declared with the static keyword , and ...

  9. Member variable - Wikipedia

    en.wikipedia.org/wiki/Member_variable

    /*Ruby has three member variable types: class, class instance, and instance. */ class Dog # The class variable is defined within the class body with two at-signs # and describes data about all Dogs *and* their derived Dog breeds (if any) @@sniffs = true end mutt = Dog. new mutt. class. sniffs #=> true class Poodle < Dog # The "class instance variable" is defined within the class body with a ...