Multi-paradigm programming language: DeLis for decentralized network applications

In this paper, we present the design and implementation of a programming language named DeLis to build a decentralized application an networks. The characteristics of DeLis are: (1) it consists of several LISP-based interpreters; (2) it provides inter-process communication facilities to exchange S-expressions through channels; (3) it provides a user interface description facilities with GUI parts; (4) it allows to define programming paradigms at will, and describe application programs in multi-paradigms; (5) it is possible to change described programs dynamically at runtime. Thus, with DeLis we can build various applications on networks and realize their flexible execution to provide services satisfying user requests. We show the effectiveness of our proposal by building various applications with DeLis.