The Seductions of Scala

Dean Wampler (Typesafe)
Java
Location: D137/138
Please note: to attend, your registration must include Tutorials.
Average rating: ***..
(3.90, 20 ratings)

Functional Programming in Scala (and Why You Should Care)

  • A brief overview of why functional programming matters (15 mins)
    • FP is a more robust approach to concurrency than “imperative” approaches.
    • FP code tends to be more succinct than procedural code, which improves our productivity in several ways.
    • Because of its mathematical roots, FP encourages more “provable-correct” code.
  • How Scala supports functional programming (60 mins)
    • Scala’s type system helps us “bake out” bugs, which complements our tests.
    • Scala supports all the common functional idioms that support the qualities described in the FP overview (we’ll cover Concurrent later).

Better Objects with Traits

  • Traits as a mechanism for component and application composition. (45 mins)
    • Scala fixes the the limitations of Java object model, using traits.
    • Traits promote abstraction and composition of focused, reusable features.
    • Traits provide a mechanism for wiring components into applications, similar to dependency injection, but with several advantages.
    • Despite apparent surface contradictions, Scala integrates functional and object-oriented programming in an elegant way.

A Look at Concurrency

  • Scala’s Actor Library (45 mins)
    • Scala’s standard Actor library implements the Actor model of concurrency, where autonomous agents coordinate their work through message passing.
    • A detailed example demonstrates how Actors work and also demonstrates examples of combining object-oriented and functional techniques most effectively in Scala.

Q & A (15 mins)

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Photo of Dean Wampler

Dean Wampler

Typesafe

Dean Wampler is a consultant for Typesafe. He specializes in scalable, distributed, data-centric application development, “Big Data” or otherwise, applying Functional Programming principles with the Typesafe Reactive Platform, Hadoop, and other tools. Dean is a contributor to several open-source projects and he is the founder of the Chicago-Area Scala Enthusiasts. He is the co-author of Programming Scala, the author of Functional Programming for Java Developers, and the co-author of Programming Hive, all from O’Reilly. He pontificates on twitter, @deanwampler.

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Comments

Wade Arnold
07/31/2010 7:14am PDT

Dean did a great job augmenting his Programming Scala book with a lot more cometary on each of the topics. The Q&A session at the end of the presentation was about as good as the talk. Excellent presentation!

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