An Implementation of Python for Racket
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Bringing GNU Emacs to Native Code
Bringing GNU Emacs to Native Code Andrea Corallo Luca Nassi Nicola Manca [email protected] [email protected] [email protected] CNR-SPIN Genoa, Italy ABSTRACT such a long-standing project. Although this makes it didactic, some Emacs Lisp (Elisp) is the Lisp dialect used by the Emacs text editor limitations prevent the current implementation of Emacs Lisp to family. GNU Emacs can currently execute Elisp code either inter- be appealing for broader use. In this context, performance issues preted or byte-interpreted after it has been compiled to byte-code. represent the main bottleneck, which can be broken down in three In this work we discuss the implementation of an optimizing com- main sub-problems: piler approach for Elisp targeting native code. The native compiler • lack of true multi-threading support, employs the byte-compiler’s internal representation as input and • garbage collection speed, exploits libgccjit to achieve code generation using the GNU Com- • code execution speed. piler Collection (GCC) infrastructure. Generated executables are From now on we will focus on the last of these issues, which con- stored as binary files and can be loaded and unloaded dynamically. stitutes the topic of this work. Most of the functionality of the compiler is written in Elisp itself, The current implementation traditionally approaches the prob- including several optimization passes, paired with a C back-end lem of code execution speed in two ways: to interface with the GNU Emacs core and libgccjit. Though still a work in progress, our implementation is able to bootstrap a func- • Implementing a large number of performance-sensitive prim- tional Emacs and compile all lexically scoped Elisp files, including itive functions (also known as subr) in C. -
Common Lispworks User Guide
LispWorks® for the Windows® Operating System Common LispWorks User Guide Version 5.1 Copyright and Trademarks Common LispWorks User Guide (Windows version) Version 5.1 February 2008 Copyright © 2008 by LispWorks Ltd. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of LispWorks Ltd. The information in this publication is provided for information only, is subject to change without notice, and should not be construed as a commitment by LispWorks Ltd. LispWorks Ltd assumes no responsibility or liability for any errors or inaccuracies that may appear in this publication. The software described in this book is furnished under license and may only be used or copied in accordance with the terms of that license. LispWorks and KnowledgeWorks are registered trademarks of LispWorks Ltd. Adobe and PostScript are registered trademarks of Adobe Systems Incorporated. Other brand or product names are the registered trade- marks or trademarks of their respective holders. The code for walker.lisp and compute-combination-points is excerpted with permission from PCL, Copyright © 1985, 1986, 1987, 1988 Xerox Corporation. The XP Pretty Printer bears the following copyright notice, which applies to the parts of LispWorks derived therefrom: Copyright © 1989 by the Massachusetts Institute of Technology, Cambridge, Massachusetts. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, pro- vided that this copyright and permission notice appear in all copies and supporting documentation, and that the name of M.I.T. -
IDE User Guide Version 7.1 Copyright and Trademarks Lispworks IDE User Guide (Unix Version) Version 7.1 September 2017 Copyright © 2017 by Lispworks Ltd
LispWorks® IDE User Guide Version 7.1 Copyright and Trademarks LispWorks IDE User Guide (Unix version) Version 7.1 September 2017 Copyright © 2017 by LispWorks Ltd. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of LispWorks Ltd. The information in this publication is provided for information only, is subject to change without notice, and should not be construed as a commitment by LispWorks Ltd. LispWorks Ltd assumes no responsibility or liability for any errors or inaccuracies that may appear in this publication. The software described in this book is furnished under license and may only be used or copied in accordance with the terms of that license. LispWorks and KnowledgeWorks are registered trademarks of LispWorks Ltd. Adobe and PostScript are registered trademarks of Adobe Systems Incorporated. Other brand or product names are the registered trade- marks or trademarks of their respective holders. The code for walker.lisp and compute-combination-points is excerpted with permission from PCL, Copyright © 1985, 1986, 1987, 1988 Xerox Corporation. The XP Pretty Printer bears the following copyright notice, which applies to the parts of LispWorks derived therefrom: Copyright © 1989 by the Massachusetts Institute of Technology, Cambridge, Massachusetts. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, pro- vided that this copyright and permission notice appear in all copies and supporting documentation, and that the name of M.I.T. -
Omnipresent and Low-Overhead Application Debugging
Omnipresent and low-overhead application debugging Robert Strandh [email protected] LaBRI, University of Bordeaux Talence, France ABSTRACT application programmers as opposed to system programmers. The state of the art in application debugging in free Common The difference, in the context of this paper, is that the tech- Lisp implementations leaves much to be desired. In many niques that we suggest are not adapted to debugging the cases, only a backtrace inspector is provided, allowing the system itself, such as the compiler. Instead, throughout this application programmer to examine the control stack when paper, we assume that, as far as the application programmer an unhandled error is signaled. Most such implementations do is concerned, the semantics of the code generated by the not allow the programmer to set breakpoints (unconditional compiler corresponds to that of the source code. or conditional), nor to step the program after it has stopped. In this paper, we are mainly concerned with Common Furthermore, even debugging tools such as tracing or man- Lisp [1] implementations distributed as so-called FLOSS, i.e., ually calling break are typically very limited in that they do \Free, Libre, and Open Source Software". While some such not allow the programmer to trace or break in important sys- implementations are excellent in terms of the quality of the tem functions such as make-instance or shared-initialize, code that the compiler generates, most leave much to be simply because these tools impact all callers, including those desired when it comes to debugging tools available to the of the system itself, such as the compiler. -
Lisp Tutorial
Gene Kim 9/9/2016 CSC 2/444 Lisp Tutorial About this Document This document was written to accompany an in-person Lisp tutorial. Therefore, the information on this document alone is not likely to be sufficient to get a good understanding of Lisp. However, the functions and operators that are listed here are a good starting point, so you may look up specifications and examples of usage for those functions in the Common Lisp HyperSpec (CLHS) to get an understanding of their usage. Getting Started Note on Common Lisp Implementations I will use Allegro Common Lisp since it is what is used by Len (and my research). However, for the purposes of this class we won’t be using many (if any) features that are specific to common lisp implementations so you may use any of the common lisp implementations available in the URCS servers. If you are using any libraries that are implementation-specific for assignments in this class, I would strongly urge you to rethink your approach if possible. If we (the TAs) deem any of these features to be solving to much of the assigned problem, you will not receive full credit for the assignment. To see if a function is in the Common Lisp specifications see the Common Lisp HyperSpec (CLHS). Simply google the function followed by “clhs” to see if an entry shows up. Available Common Lisp implementations (as far as I know): - Allegro Common Lisp (acl or alisp will start an Allegro REPL) - CMU Common Lisp (cmucl or lisp will start a CMUCL REPL) - Steel Bank Common Lisp (sbcl will start an SBCL REPL) IDE/Editor It is not important for this class to have an extensive IDE since we will be working on small coding projects. -
Proceedings of the 8Th European Lisp Symposium Goldsmiths, University of London, April 20-21, 2015 Julian Padget (Ed.) Sponsors
Proceedings of the 8th European Lisp Symposium Goldsmiths, University of London, April 20-21, 2015 Julian Padget (ed.) Sponsors We gratefully acknowledge the support given to the 8th European Lisp Symposium by the following sponsors: WWWLISPWORKSCOM i Organization Programme Committee Julian Padget – University of Bath, UK (chair) Giuseppe Attardi — University of Pisa, Italy Sacha Chua — Toronto, Canada Stephen Eglen — University of Cambridge, UK Marc Feeley — University of Montreal, Canada Matthew Flatt — University of Utah, USA Rainer Joswig — Hamburg, Germany Nick Levine — RavenPack, Spain Henry Lieberman — MIT, USA Christian Queinnec — University Pierre et Marie Curie, Paris 6, France Robert Strandh — University of Bordeaux, France Edmund Weitz — University of Applied Sciences, Hamburg, Germany Local Organization Christophe Rhodes – Goldsmiths, University of London, UK (chair) Richard Lewis – Goldsmiths, University of London, UK Shivi Hotwani – Goldsmiths, University of London, UK Didier Verna – EPITA Research and Development Laboratory, France ii Contents Acknowledgments i Messages from the chairs v Invited contributions Quicklisp: On Beyond Beta 2 Zach Beane µKanren: Running the Little Things Backwards 3 Bodil Stokke Escaping the Heap 4 Ahmon Dancy Unwanted Memory Retention 5 Martin Cracauer Peer-reviewed papers Efficient Applicative Programming Environments for Computer Vision Applications 7 Benjamin Seppke and Leonie Dreschler-Fischer Keyboard? How quaint. Visual Dataflow Implemented in Lisp 15 Donald Fisk P2R: Implementation of -
Release Notes
LispWorks® Release Notes and Installation Guide Version 6.0 Copyright and Trademarks LispWorks Release Notes and Installation Guide Version 6.0 December 2009 Copyright © 2009 by LispWorks Ltd. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of LispWorks Ltd. The information in this publication is provided for information only, is subject to change without notice, and should not be construed as a commitment by LispWorks Ltd. LispWorks Ltd assumes no responsibility or liability for any errors or inaccuracies that may appear in this publication. The software described in this book is furnished under license and may only be used or copied in accordance with the terms of that license. LispWorks and KnowledgeWorks are registered trademarks of LispWorks Ltd. Adobe and PostScript are registered trademarks of Adobe Systems Incorporated. Other brand or product names are the registered trade- marks or trademarks of their respective holders. The code for walker.lisp and compute-combination-points is excerpted with permission from PCL, Copyright © 1985, 1986, 1987, 1988 Xerox Corporation. The XP Pretty Printer bears the following copyright notice, which applies to the parts of LispWorks derived therefrom: Copyright © 1989 by the Massachusetts Institute of Technology, Cambridge, Massachusetts. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, pro- vided that this copyright and permission notice appear in all copies and supporting documentation, and that the name of M.I.T. -
A Lisp Oriented Architecture by John W.F
A Lisp Oriented Architecture by John W.F. McClain Submitted to the Department of Electrical Engineering and Computer Science in partial fulfillment of the requirements for the degrees of Master of Science in Electrical Engineering and Computer Science and Bachelor of Science in Electrical Engineering at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY September 1994 © John W.F. McClain, 1994 The author hereby grants to MIT permission to reproduce and to distribute copies of this thesis document in whole or in part. Signature of Author ...... ;......................... .............. Department of Electrical Engineering and Computer Science August 5th, 1994 Certified by....... ......... ... ...... Th nas F. Knight Jr. Principal Research Scientist 1,,IA £ . Thesis Supervisor Accepted by ....................... 3Frederic R. Morgenthaler Chairman, Depattee, on Graduate Students J 'FROM e ;; "N MfLIT oARIES ..- A Lisp Oriented Architecture by John W.F. McClain Submitted to the Department of Electrical Engineering and Computer Science on August 5th, 1994, in partial fulfillment of the requirements for the degrees of Master of Science in Electrical Engineering and Computer Science and Bachelor of Science in Electrical Engineering Abstract In this thesis I describe LOOP, a new architecture for the efficient execution of pro- grams written in Lisp like languages. LOOP allows Lisp programs to run at high speed without sacrificing safety or ease of programming. LOOP is a 64 bit, long in- struction word architecture with support for generic arithmetic, 64 bit tagged IEEE floats, low cost fine grained read and write barriers, and fast traps. I make estimates for how much these Lisp specific features cost and how much they may speed up the execution of programs written in Lisp. -
A Python Implementation for Racket
PyonR: A Python Implementation for Racket Pedro Alexandre Henriques Palma Ramos Thesis to obtain the Master of Science Degree in Information Systems and Computer Engineering Supervisor: António Paulo Teles de Menezes Correia Leitão Examination Committee Chairperson: Prof. Dr. José Manuel da Costa Alves Marques Supervisor: Prof. Dr. António Paulo Teles de Menezes Correia Leitão Member of the Committee: Prof. Dr. João Coelho Garcia October 2014 ii Agradecimentos Agradec¸o... Em primeiro lugar ao Prof. Antonio´ Leitao,˜ por me ter dado a oportunidade de participar no projecto Rosetta com esta tese de mestrado, por todos os sabios´ conselhos e pelos momentos de discussao˜ e elucidac¸ao˜ que se proporcionaram ao longo deste trabalho. Aos meus pais excepcionais e a` minha mana preferida, por me terem aturado e suportado ao longo destes quase 23 anos e sobretudo pelo incondicional apoio durante estes 5 anos de formac¸ao˜ superior. Ao pessoal do Grupo de Arquitectura e Computac¸ao˜ (Hugo Correia, Sara Proenc¸a, Francisco Freire, Pedro Alfaiate, Bruno Ferreira, Guilherme Ferreira, Inesˆ Caetano e Carmo Cardoso), por todas as sug- estoes˜ e pelo inestimavel´ feedback em artigos e apresentac¸oes.˜ Aos amigos em Tomar (Rodrigo Carrao,˜ Hugo Matos, Andre´ Marques e Rui Santos) e em Lisboa (Diogo da Silva, Nuno Silva, Pedro Engana, Kaguedes, Clara Paiva e Odemira), por terem estado pre- sentes, duma forma ou doutra, nos essenciais momentos de lazer. A` Fundac¸ao˜ para a Cienciaˆ e Tecnologia (FCT) e ao INESC-ID pelo financiamento e acolhimento atraves´ da atribuic¸ao˜ de uma bolsa de investigac¸ao˜ no ambitoˆ dos contratos Pest-OE/EEI/LA0021/2013 e PTDC/ATP-AQI/5224/2012. -
ASDF 3, Or Why Lisp Is Now an Acceptable Scripting Language (Extended Version)
ASDF 3, or Why Lisp is Now an Acceptable Scripting Language (Extended version) François-René Rideau Google [email protected] Abstract libraries, or network services; one can scale them into large, main- ASDF, the de facto standard build system for Common Lisp, has tainable and modular systems; and one can make those new ser- been vastly improved between 2009 and 2014. These and other im- vices available to other programs via the command-line as well as provements finally bring Common Lisp up to par with "scripting via network protocols, etc. languages" in terms of ease of writing and deploying portable code The last barrier to making that possible was the lack of a that can access and "glue" together functionality from the underly- portable way to build and deploy code so a same script can run ing system or external programs. "Scripts" can thus be written in unmodified for many users on one or many machines using one or Common Lisp, and take advantage of its expressive power, well- many different compilers. This was solved by ASDF 3. defined semantics, and efficient implementations. We describe the ASDF has been the de facto standard build system for portable most salient improvements in ASDF and how they enable previ- CL software since shortly after its release by Dan Barlow in 2002 ously difficult and portably impossible uses of the programming (Barlow 2004). The purpose of a build system is to enable divi- language. We discuss past and future challenges in improving this sion of labor in software development: source code is organized key piece of software infrastructure, and what approaches did or in separately-developed components that depend on other compo- didn’t work in bringing change to the Common Lisp community. -
GNU/Linux AI & Alife HOWTO
GNU/Linux AI & Alife HOWTO GNU/Linux AI & Alife HOWTO Table of Contents GNU/Linux AI & Alife HOWTO......................................................................................................................1 by John Eikenberry..................................................................................................................................1 1. Introduction..........................................................................................................................................1 2. Traditional Artificial Intelligence........................................................................................................1 3. Connectionism.....................................................................................................................................1 4. Evolutionary Computing......................................................................................................................1 5. Alife & Complex Systems...................................................................................................................1 6. Agents & Robotics...............................................................................................................................1 7. Programming languages.......................................................................................................................2 8. Missing & Dead...................................................................................................................................2 1. Introduction.........................................................................................................................................2 -
Table of Contents
Table of Contents Introduction 1.1 Dedication 1.2 Preface 1.3 About Python 1.4 Installation 1.5 First Steps 1.6 Basics 1.7 Operators and Expressions 1.8 Control flow 1.9 Functions 1.10 Modules 1.11 Data Structures 1.12 Problem Solving 1.13 Object Oriented Programming 1.14 Input and Output 1.15 Exceptions 1.16 Standard Library 1.17 More 1.18 What Next 1.19 Appendix: FLOSS 1.20 Appendix: About 1.21 Appendix: Revision History 1.22 Appendix: Translations 1.23 Appendix: Translation How-to 1.24 Feedback 1.25 1 Introduction A Byte of Python "A Byte of Python" is a free book on programming using the Python language. It serves as a tutorial or guide to the Python language for a beginner audience. If all you know about computers is how to save text files, then this is the book for you. For Python version 3 This book will teach you to use Python version 3. There will also be guidance for you to adapt to the older and more common Python version 2 in the book. Who reads A Byte of Python? Here are what people are saying about the book: This is the book that got me into programming almost a decade ago. Thank you @swaroopch. You changed my life. -- Stefan Froelich I am writing this email to thank you for the great help your book has done for me! It was a really good book that I enjoyed thoroughly. As a 15 year old who has never done programming before, trying to learn Python online was difficult and I couldn't understand anything.