The activation mechanism for dynamically generated procedures in hyperlogo

Abstract

The higher-order programming is one of the attractive and powerful ways of expressing our algoridimic/procedural methods of solving in many application fields. It represents our idea in program form naturally. The aumors have studied and implemented die function of handling higher-order programming paradigm in Hyperlogo language system. The handling functions are: to make procedure closures, to handle procedure closures in the same way as numerical value and character strings, and to activate generated procedure closures. The third point of the above functions is focused mainly in this paper. Two ways of activating closures in Hyperlogo are presented: (1) add a name to generated closure, and call it up by its name as the need arises, (2) use the assistant procedure which activates a target procedure. The procedure activate is introduced to acquire the function. © Springer-Verlag Berlin Heidelberg 2007.