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  2. Undefined variable - Wikipedia

    en.wikipedia.org/wiki/Undefined_variable

    An undefined variable in the source code of a computer program is a variable that is accessed in the code but has not been declared by that code. [1]In some programming languages, an implicit declaration is provided the first time such a variable is encountered at compile time.

  3. Name mangling - Wikipedia

    en.wikipedia.org/wiki/Name_mangling

    _f _g@4 @h@4 In the stdcall and fastcall mangling schemes, the function is encoded as _name@X and @name@X respectively, where X is the number of bytes, in decimal, of the argument(s) in the parameter list (including those passed in registers, for fastcall). In the case of cdecl, the function name is merely prefixed by an underscore.

  4. Name binding - Wikipedia

    en.wikipedia.org/wiki/Name_binding

    In programming languages, name binding is the association of entities (data and/or code) with identifiers. [1] An identifier bound to an object is said to reference that object. Machine languages have no built-in notion of identifiers, but name-object bindings as a service and notation for the programmer is implemented by programming languages.

  5. Declaration (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Declaration_(computer...

    While a variable or function may be declared many times, it is typically defined once (in C++, this is known as the One Definition Rule or ODR). Dynamic languages such as JavaScript or Python generally allow functions to be redefined, that is, re-bound; a function is a variable much like any other, with a name and a value (the definition).

  6. Scope (computer science) - Wikipedia

    en.wikipedia.org/wiki/Scope_(computer_science)

    A fundamental distinction in scope is what "part of a program" means. In languages with lexical scope (also called static scope), name resolution depends on the location in the source code and the lexical context (also called static context), which is defined by where the named variable or function is defined.

  7. Identifier (computer languages) - Wikipedia

    en.wikipedia.org/wiki/Identifier_(computer...

    In computer programming languages, an identifier is a lexical token (also called a symbol, but not to be confused with the symbol primitive data type) that names the language's entities. Some of the kinds of entities an identifier might denote include variables, data types, labels, subroutines, and modules.

  8. Variable shadowing - Wikipedia

    en.wikipedia.org/wiki/Variable_shadowing

    public class Shadow {private int myIntVar = 0; public void shadowTheVar {// Since it has the same name as above object instance field, it shadows above // field inside this method. int myIntVar = 5; // If we simply refer to 'myIntVar' the one of this method is found // (shadowing a second one with the same name) System. out. println (myIntVar); // prints 5 // If we want to refer to the ...

  9. Naming convention (programming) - Wikipedia

    en.wikipedia.org/wiki/Naming_convention...

    In Python, if a name is intended to be "private", it is prefixed by one or two underscores. Private variables are enforced in Python only by convention. Names can also be suffixed with an underscore to prevent conflict with Python keywords.