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Noun
1. forward declarationComputing
Wikipedia definition
2. Forward declarationIn 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 (size) of an identifier, but not a particular value it holds (in case of variables). In C/C++, the line above represents forward declaration of a function and is the function's prototype.
Read “Forward declaration” on English Wikipedia
Read “前方宣言” on Japanese Wikipedia
Read “Forward declaration” on DBpedia

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