Visual programming in NUT

The deep semantics of a scheme is defined as a set of programs derivable from the scheme. A uniform way of representing deep semantics of schemes is introduced based on the usage of a program synthesizer. An implementation of structural synthesis of programs in the NUT system and visual tools built on top of it are described. A visual compositional programming technique based on these tools is demonstrated on a number of examples. 1. Department of Teleinformatics, Royal Institute of Technology, Kista, Sweden 2 1. Introduction A visual programming tool is described in this paper which is intended for compositional programming. It can be, first of all, used for developing problem-oriented visual languages in engineering domains. Visual compositional programming can be considered as an extension of visual object-oriented programming thoroughly discussed in [1]. The extension lies in different encapsulation of objects and different usage of classes which is inherent to the NUT system [..