Ruby.NET & Ironruby
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Lap Around the .NET Framework 4
Lap Around the .NET Framework 4 Marc Schweigert ([email protected]) Principal Developer Evangelist DPE US Federal Government Team http://blogs.msdn.com/devkeydet http://twitter.com/devkeydet .NET Framework 4.0 User Interface Services Data Access ASP.NET Windows Windows (WebForms, Entity Presentation Data Services Communication ADO.NET MVC, Dynamic Framework Foundation Foundation Data) Windows WinForms Workflow LINQ to SQL Foundation Core Managed Dynamic Parallel Base Class Extensibility LINQ Languages Language Extensions Library Framework Runtime Common Language Runtime ASP.NET MVC 1.0 (Model View Controller) A new Web Application Project type Simply an option Not a replacement for WebForms Builds on top ASP.NET Manual vs. Automatic Transmission Supports a clear separation of concerns Supports testability Supports “close to the metal” programming experience ASP.NET MVC 2 Visual Studio 2010 Included Visual Studio 2008 (Service Pack 1) Download Both versions built against .NET 3.5 What’s New in MVC 2? Better Separation of Concerns (Maintainability) Html.RenderAction() Areas Easier Validation (Maintainability/Productivity) Data Annotations Client Validation Helper Improvements (Maintainability/Productivity) Strongly-Typed Helpers Templated Helpers ASP.NET 4 Web Forms? Support for SEO with URL Routing Cleaner HTML Client ID improvements ViewState improvements Dynamic Data Improvements Chart Controls Productivity and Extensibility Rich Client Ajax supports both MVC & Web Forms WPF 4 Calendar, Data Grid, DatePicker Ribbon (separate download) -
Ironpython in Action
IronPytho IN ACTION Michael J. Foord Christian Muirhead FOREWORD BY JIM HUGUNIN MANNING IronPython in Action Download at Boykma.Com Licensed to Deborah Christiansen <[email protected]> Download at Boykma.Com Licensed to Deborah Christiansen <[email protected]> IronPython in Action MICHAEL J. FOORD CHRISTIAN MUIRHEAD MANNING Greenwich (74° w. long.) Download at Boykma.Com Licensed to Deborah Christiansen <[email protected]> For online information and ordering of this and other Manning books, please visit www.manning.com. The publisher offers discounts on this book when ordered in quantity. For more information, please contact Special Sales Department Manning Publications Co. Sound View Court 3B fax: (609) 877-8256 Greenwich, CT 06830 email: [email protected] ©2009 by Manning Publications Co. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by means electronic, mechanical, photocopying, or otherwise, without prior written permission of the publisher. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in the book, and Manning Publications was aware of a trademark claim, the designations have been printed in initial caps or all caps. Recognizing the importance of preserving what has been written, it is Manning’s policy to have the books we publish printed on acid-free paper, and we exert our best efforts to that end. Recognizing also our responsibility to conserve the resources of our planet, Manning books are printed on paper that is at least 15% recycled and processed without the use of elemental chlorine. -
Introducing Visual Studio 2010
INTRODUCING VISUAL STUDIO 2010 DAVID CHAPPELL MAY 2010 SPONSORED BY MICROSOFT CONTENTS Tools and Modern Software Development ............................................................................................ 3 Understanding Visual Studio 2010 ........................................................................................................ 3 The Components of Visual Studio 2010 ................................................................................................... 4 A Closer Look at Team Foundation Server............................................................................................... 5 Work Item Tracking ............................................................................................................................. 7 Version Control .................................................................................................................................... 8 Build Management: Team Foundation Build ...................................................................................... 9 Reporting and Dashboards.................................................................................................................. 9 Using Visual Studio 2010 ..................................................................................................................... 12 Managing Requirements ....................................................................................................................... 12 Architecting a Solution ......................................................................................................................... -
Toward Harnessing High-Level Language Virtual Machines for Further Speeding up Weak Mutation Testing
2012 IEEE Fifth International Conference on Software Testing, Verification and Validation Toward Harnessing High-level Language Virtual Machines for Further Speeding up Weak Mutation Testing Vinicius H. S. Durelli Jeff Offutt Marcio E. Delamaro Computer Systems Department Software Engineering Computer Systems Department Universidade de Sao˜ Paulo George Mason University Universidade de Sao˜ Paulo Sao˜ Carlos, SP, Brazil Fairfax, VA, USA Sao˜ Carlos, SP, Brazil [email protected] [email protected] [email protected] Abstract—High-level language virtual machines (HLL VMs) have tried to exploit the control that HLL VMs exert over run- are now widely used to implement high-level programming ning programs to facilitate and speedup software engineering languages. To a certain extent, their widespread adoption is due activities. Thus, this research suggests that software testing to the software engineering benefits provided by these managed execution environments, for example, garbage collection (GC) activities can benefit from HLL VMs support. and cross-platform portability. Although HLL VMs are widely Test tools are usually built on top of HLL VMs. However, used, most research has concentrated on high-end optimizations they often end up tampering with the emergent computation. such as dynamic compilation and advanced GC techniques. Few Using features within the HLL VMs can avoid such problems. efforts have focused on introducing features that automate or fa- Moreover, embedding testing tools within HLL VMs can cilitate certain software engineering activities, including software testing. This paper suggests that HLL VMs provide a reasonable significantly speedup computationally expensive techniques basis for building an integrated software testing environment. As such as mutation testing [6]. -
Expression Trees 1 Dynamic Language Runtime Overview 5 Creating and Using Dynamic Objects 9 Early and Late Binding 17 Execute Ex
Expression Trees 1 Dynamic Language Runtime Overview 5 Creating and Using Dynamic Objects 9 Early and Late Binding 17 Execute Expression Trees 19 Modify Expression Trees 21 Use Expression Trees to Build Dynamic Queries 23 Debugging Expression Trees 26 Expression Trees (Visual Basic) https://msdn.microsoft.com/en-us/library/mt654260(d=printer).aspx Expression Trees (Visual Basic) Visual Studio 2015 Expression trees represent code in a tree-like data structure, where each node is an expression, for example, a method call or a binary operation such as x < y . You can compile and run code represented by expression trees. This enables dynamic modification of executable code, the execution of LINQ queries in various databases, and the creation of dynamic queries. For more information about expression trees in LINQ, see How to: Use Expression Trees to Build Dynamic Queries (Visual Basic) . Expression trees are also used in the dynamic language runtime (DLR) to provide interoperability between dynamic languages and the .NET Framework and to enable compiler writers to emit expression trees instead of Microsoft intermediate language (MSIL). For more information about the DLR, see Dynamic Language Runtime Overview . You can have the C# or Visual Basic compiler create an expression tree for you based on an anonymous lambda expression, or you can create expression trees manually by using the System.Linq.Expressions namespace. Creating Expression Trees from Lambda Expressions When a lambda expression is assigned to a variable of type Expression(Of TDelegate) , the compiler emits code to build an expression tree that represents the lambda expression. The Visual Basic compiler can generate expression trees only from expression lambdas (or single-line lambdas). -
A Hardware Abstraction Layer in Java
A Hardware Abstraction Layer in Java MARTIN SCHOEBERL Vienna University of Technology, Austria STEPHAN KORSHOLM Aalborg University, Denmark TOMAS KALIBERA Purdue University, USA and ANDERS P. RAVN Aalborg University, Denmark Embedded systems use specialized hardware devices to interact with their environment, and since they have to be dependable, it is attractive to use a modern, type-safe programming language like Java to develop programs for them. Standard Java, as a platform independent language, delegates access to devices, direct memory access, and interrupt handling to some underlying operating system or kernel, but in the embedded systems domain resources are scarce and a Java virtual machine (JVM) without an underlying middleware is an attractive architecture. The contribution of this paper is a proposal for Java packages with hardware objects and interrupt handlers that interface to such a JVM. We provide implementations of the proposal directly in hardware, as extensions of standard interpreters, and finally with an operating system middleware. The latter solution is mainly seen as a migration path allowing Java programs to coexist with legacy system components. An important aspect of the proposal is that it is compatible with the Real-Time Specification for Java (RTSJ). Categories and Subject Descriptors: D.4.7 [Operating Systems]: Organization and Design—Real-time sys- tems and embedded systems; D.3.3 [Programming Languages]: Language Classifications—Object-oriented languages; D.3.3 [Programming Languages]: Language Constructs and Features—Input/output General Terms: Languages, Design, Implementation Additional Key Words and Phrases: Device driver, embedded system, Java, Java virtual machine 1. INTRODUCTION When developing software for an embedded system, for instance an instrument, it is nec- essary to control specialized hardware devices, for instance a heating element or an inter- ferometer mirror. -
Techniques for Real-System Characterization of Java Virtual Machine Energy and Power Behavior Gilberto Contreras Margaret Martonosi
Techniques for Real-System Characterization of Java Virtual Machine Energy and Power Behavior Gilberto Contreras Margaret Martonosi Department of Electrical Engineering Princeton University 1 Why Study Power in Java Systems? The Java platform has been adopted in a wide variety of devices Java servers demand performance, embedded devices require low-power Performance is important, power/energy/thermal issues are equally important How do we study and characterize these requirements in a multi-layer platform? 2 Power/Performance Design Issues Java Application Java Virtual Machine Operating System Hardware 3 Power/Performance Design Issues Java Application Garbage Class Runtime Execution Collection LoaderJava VirtualCompiler MachineEngine Operating System Hardware How do the various software layers affect power/performance characteristics of hardware? Where should time be invested when designing power and/or thermally aware Java virtual Machines? 4 Outline Approaches for Energy/Performance Characterization of Java virtual machines Methodology Breaking the JVM into sub-components Hardware-based power/performance characterization of JVM sub-components Results Jikes & Kaffe on Pentium M Kaffe on Intel XScale Conclusions 5 Power & Performance Analysis of Java Simulation Approach √ Flexible: easy to model non-existent hardware x Simulators may lack comprehensiveness and accuracy x Thermal studies require tens of seconds granularity Accurate simulators are too slow Hardware Approach √ Able to capture full-system characteristics -
Ironpython Und Die Dynamic Language Runtime (DLR) Softwareentwicklung Mit Python Auf Der Microsoft Windows Plattform
IronPython und die Dynamic Language Runtime (DLR) Softwareentwicklung mit Python auf der Microsoft Windows Plattform Klaus Rohe ([email protected]) Microsoft Deutschland GmbH Einige Anmerkungen • Kein Python Tutorial: • Es werden einige Unterschiede von Python zu C# / Java dargestellt • Die Eigenschaften, Beispiele und Demos beziehen sich auf die Version IronPython 2.0 Beta 4. Die endgültig freigegebene Version von IronPython 2.0 kann andere Eigenschaften besitzen und sich anders verhalten. Herbstcampus 2008 – Titel des Vortrags 2 Agenda • Python • IronPython & die Dynamic Language Runtime • Benutzung von .NET Bibliotheken in IronPython • ADO.NET • WPF • Einbetten von IronPython in Applikationen • Interoperabilität • IronPython & Cpython • Interoperabilität CPython - .NET Herbstcampus 2008 – Titel des Vortrags 3 Historie von Python • Anfang der 1990er Jahre von Guido van Rossum am Zentrum für Mathematik und Informatik Amsterdam als Nachfolger für die Lehrsprache ABC entwickelt • Wurde ursprünglich für das verteilte Betriebssystem Amoeba entwickelt: http://www.cs.vu.nl/pub/amoeba/ • Der Name der Sprache bezieht sich auf die britische Komiker Gruppe Monty Python Herbstcampus 2008 – Titel des Vortrags 4 Charakterisierung von Python (1) • Python-Programm wird interpretiert • Unterstützt mehrere Programmierparadigmen: • Prozedural • Objektorientiert • Funktional • Klare, einfache Syntax • Portabel, verfügbar auf allen Plattformen mit C-Compiler • Windows, Mac OS, UNIX, LINUX, … • Leicht erweiterbar mit C/C++ Bibliotheken • Z. B. Bibliothek -
A Multi-Programming-Language, Multi-Context Framework Designed for Computer Science Education Douglas Blank1, Jennifer S
Bryn Mawr College Scholarship, Research, and Creative Work at Bryn Mawr College Computer Science Faculty Research and Computer Science Scholarship 2012 Calico: a multi-programming-language, multi- context framework designed for computer science education Doug Blank Bryn Mawr College, [email protected] Jennifer S. Kay James B. Marshall Keith O'Hara Mark Russo Let us know how access to this document benefits ouy . Follow this and additional works at: http://repository.brynmawr.edu/compsci_pubs Part of the Computer Sciences Commons Custom Citation Douglas Blank, Jennifer S. Kay, James B. Marshall, Keith O'Hara, and Mark Russo. Calico: A Multi-Programming-Language, Multi- Context Framework Designed for Computer Science Education. (2012). SIGCSE 2012 (Raleigh, NC). This paper is posted at Scholarship, Research, and Creative Work at Bryn Mawr College. http://repository.brynmawr.edu/compsci_pubs/53 For more information, please contact [email protected]. To appear in the Proceedings of the 43rd ACM Technical Symposium on Computer Science Education, SIGCSE 2012 Calico: A Multi-Programming-Language, Multi-Context Framework Designed for Computer Science Education Douglas Blank1, Jennifer S. Kay2, James B. Marshall3, Keith O'Hara4, and Mark Russo1 1Computer Science 2Computer Science 3Computer Science 4Computer Science Department Department Department Program Bryn Mawr College Rowan University Sarah Lawrence College Bard College Bryn Mawr, PA (USA) Glassboro, NJ (USA) Bronxville, NY (USA) Annandale-on-Hudson, NY (1) 610-526-6501 (1) 856-256-4593 (1) 914-395-2673 (1) 845-752-2359 [email protected] [email protected] [email protected] [email protected] ABSTRACT these contexts are often tied to a specific programming environ- The Calico project is a multi-language, multi-context program- ment, which limits their availability to only those willing to work ming framework and learning environment for computing educa- in that programming environment. -
Apache Harmony Project Tim Ellison Geir Magnusson Jr
The Apache Harmony Project Tim Ellison Geir Magnusson Jr. Apache Harmony Project http://harmony.apache.org TS-7820 2007 JavaOneSM Conference | Session TS-7820 | Goal of This Talk In the next 45 minutes you will... Learn about the motivations, current status, and future plans of the Apache Harmony project 2007 JavaOneSM Conference | Session TS-7820 | 2 Agenda Project History Development Model Modularity VM Interface How Are We Doing? Relevance in the Age of OpenJDK Summary 2007 JavaOneSM Conference | Session TS-7820 | 3 Agenda Project History Development Model Modularity VM Interface How Are We Doing? Relevance in the Age of OpenJDK Summary 2007 JavaOneSM Conference | Session TS-7820 | 4 Apache Harmony In the Beginning May 2005—founded in the Apache Incubator Primary Goals 1. Compatible, independent implementation of Java™ Platform, Standard Edition (Java SE platform) under the Apache License 2. Community-developed, modular architecture allowing sharing and independent innovation 3. Protect IP rights of ecosystem 2007 JavaOneSM Conference | Session TS-7820 | 5 Apache Harmony Early history: 2005 Broad community discussion • Technical issues • Legal and IP issues • Project governance issues Goal: Consolidation and Consensus 2007 JavaOneSM Conference | Session TS-7820 | 6 Early History Early history: 2005/2006 Initial Code Contributions • Three Virtual machines ● JCHEVM, BootVM, DRLVM • Class Libraries ● Core classes, VM interface, test cases ● Security, beans, regex, Swing, AWT ● RMI and math 2007 JavaOneSM Conference | Session TS-7820 | -
A Post-Apocalyptic Sun.Misc.Unsafe World
A Post-Apocalyptic sun.misc.Unsafe World http://www.superbwallpapers.com/fantasy/post-apocalyptic-tower-bridge-london-26546/ Chris Engelbert Twitter: @noctarius2k Jatumba! 2014, 2015, 2016, … Disclaimer This talk is not going to be negative! Disclaimer But certain things are highly speculative and APIs or ideas might change by tomorrow! sun.misc.Scissors http://www.underwhelmedcomic.com/wp-content/uploads/2012/03/runningdude.jpg sun.misc.Unsafe - What you (don’t) know sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) • Used inside the JVM / JRE sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) • Used inside the JVM / JRE // Unsafe mechanics private static final sun.misc.Unsafe U; private static final long QBASE; private static final long QLOCK; private static final int ABASE; private static final int ASHIFT; static { try { U = sun.misc.Unsafe.getUnsafe(); Class<?> k = WorkQueue.class; Class<?> ak = ForkJoinTask[].class; example: QBASE = U.objectFieldOffset (k.getDeclaredField("base")); java.util.concurrent.ForkJoinPool QLOCK = U.objectFieldOffset (k.getDeclaredField("qlock")); ABASE = U.arrayBaseOffset(ak); int scale = U.arrayIndexScale(ak); if ((scale & (scale - 1)) != 0) throw new Error("data type scale not a power of two"); ASHIFT = 31 - Integer.numberOfLeadingZeros(scale); } catch (Exception e) { throw new Error(e); } } } sun.misc.Unsafe -
Openjdk – the Future of Open Source Java on GNU/Linux
OpenJDK – The Future of Open Source Java on GNU/Linux Dalibor Topić Java F/OSS Ambassador Blog aggregated on http://planetjdk.org Java Implementations Become Open Source Java ME, Java SE, and Java EE 2 Why now? Maturity Java is everywhere Adoption F/OSS growing globally Innovation Faster progress through participation 3 Why GNU/Linux? Values Freedom as a core value Stack Free Software above and below the JVM Demand Increasing demand for Java integration 4 Who profits? Developers New markets, new possibilities Customers More innovations, reduced risk Sun Mindshare, anchoring Java in GNU/Linux 5 License + Classpath GPL v2 Exception • No proprietary forks (for SE, EE) • Popular & trusted • Programs can have license any license • Compatible with • Improvements GNU/Linux remain in the community • Fostering adoption • FSFs license for GNU Classpath 6 A Little Bit Of History Jun 1996: Work on gcj starts Nov 1996: Work on Kaffe starts Feb 1998: First GNU Classpath Release Mar 2000: GNU Classpath and libgcj merge Dec 2002: Eclipse runs on gcj/Classpath Oct 2003: Kaffe switches to GNU Classpath Feb 2004: First FOSDEM Java Libre track Apr 2004: Richard Stallman on the 'Java Trap' Jan 2005: OpenOffice.org runs on gcj Mai 2005: Work on Harmony starts 7 Sun & Open Source Java RIs Juni 2005: Java EE RI Glassfish goes Open Source Mai 2006: First Glassfish release Mai 2006: Java announced to go Open Source November 2006: Java ME RI PhoneME goes Open Source November 2006: Java SE RI Hotspot und Javac go Open Source Mai 2007: The rest of Java SE follows suit 8 Status: JavaOne, Mai 2007 OpenJDK can be fully built from source, 'mostly' Open Source 25,169 Source code files 894 (4%) Binary files (“plugs”) 1,885 (8%) Open Source, though not GPLv2 The rest is GPLv2 (+ CP exception) Sun couldn't release the 4% back then as free software.