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Summary
In a reprise of her ACM Turing Award lecture, Barbara Liskov discusses the invention of abstract data types, the CLU programming language, clusters, polymorphism, exception handling, iterators, implementation inheritance, type hierarchies, the Liskov Substitution Principle, polymorphism, and future challenges such as new abstractions, parallelism, and the Internet.

Bio
Barbara Liskov is an Institute Professor and head of the Programming Methodology Group. Liskov's research interests lie in programming methodology, programming languages and systems, and distributed computing. Liskov is a member of the National Academy of Engineering, and a fellow of the American Academy of Arts and Sciences, and the Association for Computer Machinery (ACM).

About the conference
Starting in 1986, OOPSLA Conference has proven to be the cradle of many techniques and methodologies that have become mainstream over the years: OOP, Patterns, AOP, XP, Unit Testing, UML, Wiki, and Refactoring. Gaining its prestige with 3 academic tracks, OOPSLA Conference has managed to attract researchers, educators and developers every year. The event is sponsored by ACM.

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Summary
Neal Gafter explains why Microsoft has introduced dynamic typing in C# 4.0, what it is useful for - Interoperate with dynamic languages, Using reflection-like API, Interacting with COM -, what is DLR, and why they have chosen the dynamic type instead of other possible solutions.

Bio
Neal Gafter works on .NET languages at Microsoft. He used to be a software engineer and Java evangelist at Google. Previously, at Sun Microsystems, he designed and implemented the Java language features in releases 1.4 through 5.0. and led the development of C and C++ compilers at Sun Microsystems, Microtec Research, and Texas Instruments. He holds a Ph.D. in CS from the University of Rochester.

About the conference
The 2009 JVM Language Summit is an open technical collaboration among language designers, compiler writers, tool builders, runtime engineers, and VM architects. The talks inform the audience, in detail, about the state of the art of language design and implementation on the JVM, and the present and future capabilities of the JVM itself.

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Summary
Avi Bryant talks about the iterative process that led to Trendly (http://trendly.com/ ), using Javascript, Ruby and Java in the process. He goes on to give his view on the state of Smalltalk and Squeak and talks about his experiments with writing a Smalltalk that compiles to idiomatic Javascript to make use of all the modern Javascript VMs.

Bio
Avi Bryant is the co-CEO of Dabble DB, a Vancouver startup focused on web-based data management and collaboration tools. He is the author of the Seaside web application framework, and is active in the open source Squeak Smalltalk community. His latest project is http://trendly.com/

About the conference
FutureRuby isn't a Ruby conference, but a conference for Rubyists. This is a call to order - a congress of the curious characters that drew us to this community in the first place. We have a singular opportunity to express a long-term vision, a future where Ruby drives creativity and prosperity without being dampened by partisan politics.

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Summary
Tony Hoare introduced Null references in ALGOL W back in 1965 “simply because it was so easy to implement”, says Mr. Hoare. He talks about that decision considering it “my billion-dollar mistake”.

Bio
Sir Charles Antony Richard Hoare, commonly known as Tony Hoare, is a British computer scientist, probably best known for the development in 1960, at age 26, of Quicksort. He also developed Hoare logic, the formal language Communicating Sequential Processes (CSP), and inspired the Occam programming language.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this interview with Sadek Drobi, Michael Feathers explores working with legacy code, working with different programming languages, the right scope/size of modules, and the importance of readability of code regardless of the programming language.

Bio
Michael Feathers is a senior member of Object Mentor team. He provides training, coaching and mentoring services in Agile/XP programming practices, test-driven development, refactoring, object-oriented design, Java, C#, and C++.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
Multiprocessor systems have gone from being rare and expensive to being ubiquitous. As the hardware reality changes, so do the programs we want to write and so must the platform and libraries we rely on. In Java SE 7, the java.util.concurent package will grow to address the need to exploit finer-grained concurrency, in the form of the fork-join framework.

Bio
Brian Goetz is the author of over 75 articles on software development, and the book, Java Concurrency In Practice. He serves on the JCP Expert Groups and is a Sr. Staff Engineer at Sun Microsystems.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
The idea of internal DSLs didn't originate in Ruby, but the Ruby community has been pushing hard on the idea and exploring its potential and limitations over the past seven years or so. We're still very excited by the possibilities, but we've definitely learned some things not to do. Mostly we've learned that DSL's aren't magic -- either the white kind (they don't solve all your problems) or the black kind (they aren't really that hard to build). In this talk we'll discuss the lessons the Ruby community has learned, and learn how to build state-of-the-art DSLs without going overboard. 

Bio
Glenn Vanderburg is a consultant at Relevance focused on cutting-edge software development technologies and techniques, including Ruby, JavaScript, Ajax, and state-of-the-art development practices.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this phone interview that took place in front of an audience at OOPSLA 2008, Guy Steele spins a yarn with John McCarthy, the father of Lisp, attempting to find out some details surrounding the language inception in the 50’ and its later evolution.

Bio
John McCarthy has been involved in Artificial Intelligence since 1948, a term he coined in 1955. He has been mainly interested in formalization of common sense knowledge. He designed LISP in 1958 and developed the concept of time-sharing. Among others, he has received the Turing Award, the Research Excellence Award, and the Kyoto Prize.

About the conference
Starting in 1986, OOPSLA Conference has proven to be the cradle of many techniques and methodologies that have become mainstream over the years: OOP, Patterns, AOP, XP, Unit Testing, UML, Wiki, and Refactoring. Gaining its prestige with 3 academic tracks, OOPSLA Conference has managed to attract researchers, educators and developers every year. The event is sponsored by ACM.

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Summary

Just as the Java language was extended in Java 5 to add generics, enumerations, and other features, a number of new language features are being developed for JDK7.

We examine the changes and their interactions, how they are conditioned by preexisting language design choices, and discuss how they influence the way APIs are designed.

• superpackages
• closures
• annotations on types
• type inference
• exception handling
• self types

Bio
Neal Gafter is a software engineer and Java evangelist at Google. Previously, at Sun Microsystems, he designed and implemented the Java language features in releases 1.4 through 5.0. and led the development of C and C++ compilers at Sun Microsystems, Microtec Research, and Texas Instruments. He holds a Ph.D. in computer science from the University of Rochester.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this panel recorded during OOPSLA 2008, the panelists, Jeff Gray (moderator), Kathleen Fisher, Charles Consel, Gabor Karsai, Marjan Mernik, Juha-Pekka Tolvanen, talk about the benefits and drawbacks of using DSLs.

Bio
The panelists are: Jeff Gray (Moderator), University of Alabama at Birmingham, Kathleen Fisher, AT&T Labs, Charles Consel,University of Bordeaux and INRIA, Gabor Karsai, Vanderbilt University, Marjan Mernik, University of Maribor, Juha-Pekka Tolvanen, MetaCase.

About the conference
Starting in 1986, OOPSLA Conference has proven to be the cradle of many techniques and methodologies that have become mainstream over the years: OOP, Patterns, AOP, XP, Unit Testing, UML, Wiki, and Refactoring. Gaining its prestige with 3 academic tracks, OOPSLA Conference has managed to attract researchers, educators and developers every year. The event is sponsored by ACM.

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Summary
In this interview made by InfoQ’s Sadek Drobi, Don Syme, a Senior Researcher at Microsoft Research, answers questions mostly on F#, but also on functional programming, C# generics, type classes in Haskell, similarities between F# and Scala.

Bio
Don Syme has had a major contribution to the design of F#. He has also participated in the design of C# generics and .NET CLR. He joined Microsoft Research in 1998 and has a Ph.D. from the University of Cambridge Computer Laboratory in 1999.

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Summary

The last few years have seen a large upsurge in the number of alternative languages running on the JVM. Until recently, Java was the only serious language that ran on the Java platform, but this is now quickly changing with languages like Scala, Nice, Pnuts and Groovy being designed for the JVM, and language ports like Kawa, Jython and JRuby gaining headway as fully featured alternative implementations of existing programming languages. Java is shifting to becoming a platform that can support a wide range of languages on the same runtime.

But there is still things missing from the JVM, that would make alternative implementations easier. JSR 292 aims to improve support for implementing dynamic languages on the JVM by adding new functionality to the platform. This functionality does not necessarily have to be used by the Java language. Some things that might be a part of the next generation JVM is dynamic method dispatch, lightweight autonoumous method handles, interface injection, tail call optimization, tuples and many more.

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Summary
In this presentation recorded during QCon London 2008, Simon Peyton-Jones advertises the need for programming purity achieved especially through use of functional languages and the increased attention given to functional programming.

Bio
Honorary Professor of Computer Science at the University of Glasgow, Simon Peyton Jones currently works at Microsoft Research in Cambridge. He has led several research projects focused on the implementation and applications of functional programming languages. He has greatly contributed to the design of the Haskell language, and is the lead designer of the Glasgow Haskell Compiler.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation from the JVM Languages Summit 2008, Neal Gafter discusses closures on the JVM. Topics covered include the JVM libraries, the challenges of running other languages on the JVM, language-specific wrapper/shim libraries, ways of making the JVM more language-friendly, whether lambda expressions are too hard, the history of closures, and forking the JVM to support closures.

Bio
Neal Gafter works for Microsoft on the dotNet platform languages. To balance his life, his hobby is designing and developing the future of the Java programming language. He was previously a software engineer at Google working on Google Calendar, and a senior staff engineer at Sun Microsystems, where he co-designed and implemented the Java language features in releases 1.4 through 5.0.

About the conference
The 2008 JVM Language Summit is an open technical collaboration among language designers, compiler writers, tool builders, runtime engineers, and VM architects. The talks inform the audience, in detail, about the state of the art of language design and implementation on the JVM, and the present and future capabilities of the JVM itself.

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Factor is a general-purpose programming language which has been in development for a little over five years and is influenced by Forth, Lisp, and Smalltalk. Factor takes the best ideas from Forth – simplicity, succinct code, emphasis on interactive testing, meta-programming – and brings modern high-level language features such as garbage collection, object orientation, and functional programming familiar to users of languages such as Python and JavaScript. Recognizing that no programming language is an island, Factor is portable, ships with a full-featured standard library, deploys stand-alone binaries, and interoperates with C and Objective-C.

In this talk, I will give the rationale for Factor's creation, present an overview of the language, and show how Factor can be used to solve real-world problems with a minimum of fuss. At the same time, I will emphasize Factor's extensible syntax, meta-programming and reflection capabilities, and show that these features, which are unheard of in the world of mainstream programming languages, make programs easier to write, more robust, and fun.

Speaker: Slava Pestov
Slava was born in the former USSR and emigrated to New Zealand at the age of 7. He moved to Ottawa, Canada when he was 18 to study for a Bachelors and Masters degree in Mathematics. He now resides in Minneapolis, Minnesota. An early adopter of Java, Slava wrote the popular jEdit text editor, then went on to design and implement the Factor programming language. At his day job he hacks on web apps, optimizing compilers, garbage collectors, and everything in between.

Google Tech Talks
October 27, 2008

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Summary
In this RubyFringe talk, Reginald Braithwaite shows how to write Ruby that reads, writes, and rewrites Ruby. The demos include extending the Ruby language with conditional expressions, new forms of evaluation such as call-by-name and call-by-need, and more.

Bio
Reginald Braithwaite was the tech lead on the team that created JProbe Threadalyzer, a tool that did automatic detection of potential threading-related bugs. Shortly after that he became Program Manager for the suite of JProbe tools and then Development Manager. He is a speaker at conferences like RubyFringe and MeshU. He is author of the Invocation Construction Kit and Rewrite for Ruby.

About the conference
RubyFringe is an avant-garde conference for developers that are excited about emerging Ruby projects and technologies. They're mounting a unique and eccentric gathering of the people and projects that are driving things forward in our community.

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Summary
In this interview filmed during QCon London 2008, Joe Armstrong, designer of Erlang, speaks on various aspects of the Erlang language, presenting its roots, how it compares with other languages and why it has become popular these days due to its native ability to scale on multi core systems.

Bio
Joe Armstrong is the principle inventor of Erlang and coined the term "Concurrency Oriented Programming". At Ericsson he developed Erlang and was chief architect of the Erlang/OTP system. In 1998 he formed Bluetail, which developed all its products in Erlang. In 2003 he obtain his PhD from the Royal Institute of Technology, Stockholm. He is author of the book "Software for a concurrent world".

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Summary
In this keynote from the JVM Languages Summit 2008, James Gosling discusses how his history with programming languages led to Java's creation, code as algebra, how users use a product in very unusual ways, Java as a compromise between C and scripting languages, ANDF and Virtual Machines, pointer integrity, the Java object model, gotos and multilevel breaks, primitives and optimization tricks.

Bio
James Gosling received a BSc in Computer Science from the University of Calgary, Canada in 1977. He received a PhD in Computer Science from Carnegie-Mellon University in 1983. He is currently a VP & Fellow at Sun Microsystems. He did the original design of the Java programming language and implemented its original compiler and virtual machine.

About the conference
The 2008 JVM Language Summit is an open technical collaboration among language designers, compiler writers, tool builders, runtime engineers, and VM architects. The talks inform the audience, in detail, about the state of the art of language design and implementation on the JVM, and the present and future capabilities of the JVM itself.

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Summary
In this QCon London 2008 interview, computer scientist and researcher Simon Peyton Jones discusses properties of functional programming languages, and particularly Haskell, that have inspired some features in mainstream languages. He gives his opinion on the issues of syntax and language complexity and talks about some research work on subjects such as Data parallelism and transactional memory.

Bio
Honorary Professor of Computer Science at the University of Glasgow, Simon Peyton Jones currently works at Microsoft Research in Cambridge. He has led several research projects focused on the implementation and applications of functional programming languages. He has greatly contributed to the design of the Haskell language, and is the lead designer of the Glasgow Haskell Compiler.

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Summary
In this interview from QCon London 2008, Neal Gafter discusses upcoming language features in Java 7, superpackages, what closures are, the differences between the three major closures proposals (CICE, FCM and BGGA), optional typing systems for dynamic languages, and the next major language.

Bio
Neal Gafter is a software engineer and Java evangelist at Google. He was previously a senior staff engineer at Sun Microsystems, where he designed and implemented the Java language features in releases 1.4 through 5.0. Neal is coauthor of "Java Puzzlers: Traps, Pitfalls, and Corner Cases" (Addison Wesley, 2005).

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Summary
Sun Fellow Guy Steele is interviewed by Floyd Marinescu, co-founder of InfoQ, and Bobby Norton of ThoughtWorks. Guy works for the Programming Language Research Group. The interview focuses on programming languages, the lessons to be learned from the past and what to expect from the future.

Bio
Guy Steele is a Sun Fellow for Sun Microsystems Laboratories, working on the Programming Language Research project. He received his A.B. in applied mathematics from Harvard College (1975), and his S.M. and Ph.D. in computer science and artificial intelligence from MIT (1977 and 1980). Prior to joining Sun Microsystems, he was an assistant professor of computer science at Carnegie-Mellon University

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Summary
Glenn Vanderburg makes the case for Javascript, a language long overlooked. This presentation from JAOO 2007 shows how its OOP model and other language features make it a very powerful tool and how to use these features to get the most out of the language.

Bio
Glenn Vanderburg is an independent consultant focused on cutting-edge software development technologies and techniques, including Ruby, JavaScript, Ajax, and state-of-the-art development practices.

About the conference
JAOO is the premier European developer conference on software technology, methods and best practices. The conference presents in-depth presentations and tutorials by researchers, engineers and trend-setters in software engineering and technology.

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Summary
How do you program a multicore computer? Easy - do it in Erlang. Erlang is a concurrent functional programming language designed for programming fault-tolerant systems. With share-nothing semantics and pure message passing, Erlang programs scales on multicore computers. In this talk, Joe introduces Erlang, the ideas of Concurrent Oriented Programming and commercial applications written in Erlang.

Bio
Joe Armstrong is the principle inventor of Erlang and coined the term "Concurrency Oriented Programming". At Ericsson he developed Erlang and was chief architect of the Erlang/OTP system. In 1998 he formed Bluetail, which developed all its products in Erlang. In 2003 he obtain his PhD from the Royal Institute of Technology, Stockholm. He is author of the book "Software for a concurrent world".

About the conference
JAOO is the premier European developer conference on software technology, methods and best practices. The conference presents in-depth presentations and tutorials by researchers, engineers and trend-setters in software engineering and technology.

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