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Universally unique identifier. A Universally Unique Identifier ( UUID) is a 128-bit label used for information in computer systems. The term Globally Unique Identifier ( GUID) is also used, mostly in Microsoft systems. [1] [2] When generated according to the standard methods, UUIDs are, for practical purposes, unique.
Even though its name is unique, g() is still mangled: name mangling applies to all C++ symbols (except for those in an extern "C" {} block). Complex example. The mangled symbols in this example, in the comments below the respective identifier name, are those produced by the GNU GCC 3.x compilers, according to the IA-64 (Itanium) ABI:
Unique identifier. A unique identifier ( UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. [1] The concept was formalized early in the development of computer science and information systems. In general, it was associated with an atomic data type .
Identifier (computer languages) 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 .
Symbol table. In computer science, a symbol table is a data structure used by a language translator such as a compiler or interpreter, where each identifier (or symbol ), constant, procedure and function in a program's source code is associated with information relating to its declaration or appearance in the source.
A namespace is a system of organizing names or identifiers to avoid ambiguity and confusion. In computer science, namespaces are used to group related entities, such as variables, functions, classes, or modules, under a common name. This article explains the concept and history of namespaces, as well as their applications and implementations in different programming languages and environments.
An identifier is a name that identifies (that is, labels the identity of) either a unique object or a unique class of objects, where the "object" or class may be an idea, physical countable object (or class thereof), or physical noncountable substance (or class thereof). The abbreviation ID (or Id) often refers to identity, identification (the ...
In computer programming, a magic number is any of the following: A unique value with unexplained meaning or multiple occurrences which could (preferably) be replaced with a named constant. A constant numerical or text value used to identify a file format or protocol; for files, see List of file signatures.