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Publication
International Conference on APL 1983
Conference paper
APL function variants and system labels
Abstract
While APL extensions are adding power to the language by generalizing and adding operators, the necessity of defining additional attributes of functions is becoming increasingly visible and no longer ignorable. This paper describes the function variant problem, and proposes a solution by introducing the concept of system labels. Three system labels are described: DID for the identity function, DINV for the inverse function, Q.FL for the fill function.