NDLI: Monadic robotics

Content Provider	ACM Digital Library
Author	Peterson, John Hager, Greg
Abstract	We have developed a domain specific language for the construction of robot controllers, Frob (Functional ROBotics). The semantic basis for Frob is Functional Reactive Programming, or simply FRP, a purely functional model of continuous time, interactive systems. FRP is built around two basic abstractions: behaviors, values defined continuously in time, and events, discrete occurances in time. On this foundation, we have constructed abstractions specific to the domain of robotics. Frob adds yet another abstraction: the task, a basic unit of work defined by a continuous behavior and a terminating event.This paper examines two interrelated aspects of Frob. First, we study the design of systems based on FRP and how abstractions defined using FRP can capture essential domain-specific concepts for systems involving interaction over time. Second, we demonstrate an application of monads, used here to implement Frob tasks. By placing our task abstraction in a monadic framework, we are able to organize task semantics in a modular way, allowing new capabilities to be added without pervasive changes to the system.We present several robot control algorithms specified using Frob. These programs are clear, succinct, and modular, demonstrating the power of our approach.
Starting Page	95
Ending Page	108
Page Count	14
File Format	PDF
ISSN	03621340 15581160
DOI	10.1145/331963.331976
Journal	ACM SIGPLAN Notices (SIGP)
Volume Number	35
Issue Number	1
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1983-05-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Software

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