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- Forward_declaration abstract "In computer programming, a forward declaration is a declaration of an identifier (denoting an entity such as a type, a variable, or a function) for which the programmer has not yet given a complete definition. It is required for a compiler to know the type of an identifier (size for memory allocation, type for type checking, such as signature of functions), but not a particular value it holds (in case of variables) or definition (in the case of functions), and is useful for one-pass compilers. Forward declaration is used in languages that require declaration before use; it is necessary for mutual recursion in such languages, as it is impossible to define these functions without a forward reference in one definition. It is also useful to allow flexible code organization, for example if one wishes to place the main body at the top, and called functions below it.In other languages forward declaration is not necessary, and generally require a multi-pass compiler – identifiers must be defined (variables initialized, functions defined) before they are used in execution, but do not need to be defined lexically before used in compilation or interpretation.".
- Forward_declaration wikiPageID "2959937".
- Forward_declaration wikiPageRevisionID "577943148".
- Forward_declaration hasPhotoCollection Forward_declaration.
- Forward_declaration subject Category:Articles_with_example_C_code.
- Forward_declaration subject Category:Programming_constructs.
- Forward_declaration type Abstraction100002137.
- Forward_declaration type Cognition100023271.
- Forward_declaration type Concept105835747.
- Forward_declaration type Content105809192.
- Forward_declaration type Idea105833840.
- Forward_declaration type ProgrammingConstructs.
- Forward_declaration type PsychologicalFeature100023100.
- Forward_declaration comment "In computer programming, a forward declaration is a declaration of an identifier (denoting an entity such as a type, a variable, or a function) for which the programmer has not yet given a complete definition. It is required for a compiler to know the type of an identifier (size for memory allocation, type for type checking, such as signature of functions), but not a particular value it holds (in case of variables) or definition (in the case of functions), and is useful for one-pass compilers.".
- Forward_declaration label "Déclaration avancée".
- Forward_declaration label "Forward declaration".
- Forward_declaration label "Предварительное объявление".
- Forward_declaration label "前向声明".
- Forward_declaration label "前方宣言".
- Forward_declaration sameAs Déclaration_avancée.
- Forward_declaration sameAs 前方宣言.
- Forward_declaration sameAs m.08g6dw.
- Forward_declaration sameAs Q782471.
- Forward_declaration sameAs Q782471.
- Forward_declaration sameAs Forward_declaration.
- Forward_declaration wasDerivedFrom Forward_declaration?oldid=577943148.
- Forward_declaration isPrimaryTopicOf Forward_declaration.