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InfoQ Homepage Presentations Perception and Action: An Introduction to Clojure's Time Model

Perception and Action: An Introduction to Clojure's Time Model

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Summary

Stuart Halloway discusses how we use a total control time model, proposing a different one that represents the world more accurately helping to solve some of the concurrency and parallelism problems.

Bio

Stuart Halloway is a co-founder of Relevance, Inc. and is the author of “Programming Clojure”, “Component Development for the Java Platform” and “Rails for Java Developers”. He regularly speaks at industry events including the No Fluff, Just Stuff Java Symposiums, the Pragmatic Studio, RubyConf, and RailsConf.

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.

Recorded at:

Apr 15, 2011

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Community comments

  • my head hurts

    by Duraid Duraid,

    • Re: my head hurts

      by Faisal Waris,

      • my head hurts

        by Duraid Duraid,

        Your message is awaiting moderation. Thank you for participating in the discussion.

        ...........

      • Re: my head hurts

        by Faisal Waris,

        Your message is awaiting moderation. Thank you for participating in the discussion.

        need to rewire those neurons for functional programming after years of imperative programming.

        This is why Carnegie Mellon is starting freshman with functional programming right off the bat - before their absorbent young minds get infested with imperative thinking.

      • Re: my head hurts

        by Duraid Duraid,

        Your message is awaiting moderation. Thank you for participating in the discussion.

        I realize i'm not enlightened like the rest of you with functional programming.

        But it's not that, it's all the other stuff. transactional memory, persistent data structures, ref deref...etc. This guy was shooting a new big keyword every minute and only stop at it for a bit as if they're well understood concepts. Makes me wonder if the purpose of the speech is to teach something or just show off.

      • Re: my head hurts

        by Matthew Lucas,

        Your message is awaiting moderation. Thank you for participating in the discussion.

        That's true - but the talk is specifically about the time model, not really an introduction to Clojure or FP itself.

        Check this out for all the transactional memory, ref, deref stuff

        www.infoq.com/presentations/hickey-clojure

        But yeah, FP is hard to get your head around - I guess at least as hard as learning OO/imperative the first time around.

      • Re: my head hurts

        by Duraid Duraid,

        Your message is awaiting moderation. Thank you for participating in the discussion.

        Thanks Matthew, I also found the following talk which is about the same subject but better structured.

        www.infoq.com/presentations/Value-Identity-Stat...

        Contrary to what Faisal said, I found that the time model has very little to do with the concept of functional programming.

      • Observer should effect the observed?

        by Duraid Duraid,

        Your message is awaiting moderation. Thank you for participating in the discussion.

        Well according to quantum theory this is not the case. So if we want to be precise sending a message to an object asking it about its state is more correct model to the world.

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