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Stuart Halloway
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Presentations
Introduction to Functional Programming with Clojure
Functional programming has many advantages. For starters: Pure functions have no dependence on context, so they are easy to write, easy to test, easy to read. Most importantly, they are easy to combine.more »The Best of OO: Clojure Types and Protocols
The best abstraction in OO is the interface: a pure specification that can the be implemented polymorphically by many different callees. Clojure's types and protocols generalize this idea to solve the expression problem. In this session you will learn: more »Clojure
In recent years, the Java community has embraced a variety of new languages that target the JVM, but also offer productivity advantages over traditional Java coding. In this half-day session you will explore Clojure, a language with many compelling featurmore »Introduction to Functional Programming with Clojure
By Stuart Halloway
Functional programming has many advantages. For starters:
- Pure functions have no dependence on context, so they are easy to write, easy to test, easy to read. Most importantly, they are easy to combine.
- Referential transparency makes substitution, caching, and lazy evaluation possible -- and simple.
- Careful abstraction makes functions broadly reusable, in contrast with OO 'concretion' which aspires to encapsulation but mostly just protects your data from being reused.
To take full advantage of FP you have to think differently. In this session, you will learn how to reap the benefits above, by:
- Programming with immutable values
- Sharing data between persistent data structures
- Recursing instead of looping
- Using map, reduce, and into
- Composing functions from the sequence library
- Paying as you go with lazy data structures
Examples will be in Clojure, and will include a set of hands-on exercises to take home.
The Best of OO: Clojure Types and Protocols
By Stuart Halloway
The best abstraction in OO is the interface: a pure specification that can the be implemented polymorphically by many different callees. Clojure's types and protocols generalize this idea to solve the expression problem. In this session you will learn:
- What the expression problem is.
- How the expression problem hurts your code every day, through wrappers, mixins, adapters, facades, open classes, and monkey patches.
- How protocols solve the expression problem.
- Ease of use matters: using protocols and types are as simple as classes and interfaces.
- Performance matters too: protocols take advantage of the host environment's support for fast polymorphic dispatch.
Examples will include hands-on exercises for you to take home.
Clojure
By Stuart Halloway
In recent years, the Java community has embraced a variety of new languages that target the JVM, but also offer productivity advantages over traditional Java coding. In this half-day session you will explore Clojure, a language with many compelling features;
- Clojure provides all the low-ceremony goodness you know and love from dynamic languages such as Ruby and Python.
- Clojure's sequence library turns the tables on OO, providing a powerful set of verbs that can work with a small, standard set of nouns.
- Clojure is a Lisp and gracefully supports Lisp's signature feature: code as data.
- Clojure's functional style and support for software transactional memory make it an appealing option for taking advantage of massively parallel hardware.
- Clojure's datatypes and protocols generalize the best idea in OO (interfaces) to handle the expression problem. Say goodbye to wrappers, mixins, adapters, and monkey-patches.
Examples will include hands-on exercises during the session, and more for you to take home.
Books
by Stuart Halloway
List Price: $32.95
Price: $21.64
You Save: $11.31 (34%)
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Clojure is a dynamic language for the Java Virtual Machine, with a compelling combination of features:
Clojure is elegant. Clojure's clean, careful design lets you write programs that get right to the essence of a problem, without a lot of clutter and ceremony.
Clojure is Lisp reloaded. Clojure has the power inherent in Lisp, but is not constrained by the history of Lisp.
Clojure is a functional language. Data structures are immutable, and functions tend to be side-effect free. This makes it easier to write correct programs, and to compose large programs from smaller ones.
Clojure is concurrent. Rather than error-prone locking, Clojure provides software transactional memory.
Clojure embraces Java. Calling from Clojure to Java is direct, and goes through no translation layer.
Clojure is fast. Wherever you need it, you can get the exact same performance that you could get from hand-written Java code.
Many other languages offer some of these features, but the combination of them all makes Clojure sparkle. Programming Clojure shows you why these features are so important, and how you can use Clojure to build powerful programs quickly.
Price: $21.64
You Save: $11.31 (34%)
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Clojure is a dynamic language for the Java Virtual Machine, with a compelling combination of features:
Clojure is elegant. Clojure's clean, careful design lets you write programs that get right to the essence of a problem, without a lot of clutter and ceremony.
Clojure is Lisp reloaded. Clojure has the power inherent in Lisp, but is not constrained by the history of Lisp.
Clojure is a functional language. Data structures are immutable, and functions tend to be side-effect free. This makes it easier to write correct programs, and to compose large programs from smaller ones.
Clojure is concurrent. Rather than error-prone locking, Clojure provides software transactional memory.
Clojure embraces Java. Calling from Clojure to Java is direct, and goes through no translation layer.
Clojure is fast. Wherever you need it, you can get the exact same performance that you could get from hand-written Java code.
Many other languages offer some of these features, but the combination of them all makes Clojure sparkle. Programming Clojure shows you why these features are so important, and how you can use Clojure to build powerful programs quickly.
by Stuart Halloway and Justin Gehtland
List Price: $34.95
Price: $26.56
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Many Java developers are now looking at Ruby, and the Ruby on Rails web framework. If you are one of them, this book is your guide. Written by experienced developers who love both Java and Ruby, this book will show you, via detailed comparisons and commentary, how to translate your hard-earned Java knowledge and skills into the world of Ruby and Rails.
If you are a Java programmer, you shouldn't have to start at the very beginning! You already have deep experience with the design issues that inspired Rails, and can use this background to quickly learn Ruby and Rails. But Ruby looks a lot different from Java, and some of those differences support powerful abstractions that Java lacks. We'll be your guides to this new, but not strange, territory.
In each chapter, we build a series of parallel examples to demonstrate some facet of web development. Because the Rails examples sit next to Java examples, you can start this book in the middle, or anywhere else you want. You can use the Java version of the code, plus the analysis, to quickly grok what the Rails version is doing. We have carefully cross-referenced and indexed the book to facilitate jumping around as you need to.
Thanks to your background in Java, this one short book can cover a half-dozen books' worth of ideas:
Programming Ruby Building MVC (Model/View/Controller) Applications Unit and Functional Testing Security Project Automation Configuration Web Services
Price: $26.56
You Save: $8.39 (24%)
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Many Java developers are now looking at Ruby, and the Ruby on Rails web framework. If you are one of them, this book is your guide. Written by experienced developers who love both Java and Ruby, this book will show you, via detailed comparisons and commentary, how to translate your hard-earned Java knowledge and skills into the world of Ruby and Rails.
If you are a Java programmer, you shouldn't have to start at the very beginning! You already have deep experience with the design issues that inspired Rails, and can use this background to quickly learn Ruby and Rails. But Ruby looks a lot different from Java, and some of those differences support powerful abstractions that Java lacks. We'll be your guides to this new, but not strange, territory.
In each chapter, we build a series of parallel examples to demonstrate some facet of web development. Because the Rails examples sit next to Java examples, you can start this book in the middle, or anywhere else you want. You can use the Java version of the code, plus the analysis, to quickly grok what the Rails version is doing. We have carefully cross-referenced and indexed the book to facilitate jumping around as you need to.
Thanks to your background in Java, this one short book can cover a half-dozen books' worth of ideas:
Programming Ruby Building MVC (Model/View/Controller) Applications Unit and Functional Testing Security Project Automation Configuration Web Services
by Stuart Dabbs Halloway
List Price: $39.99
Price: $31.27
You Save: $8.72 (22%)
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If you're serious about writing components in Java, this book focuses on the component services you need to master. DevelopMentor Chief Scientist Stuart Halloway presents unprecedented, in-depth coverage of writing, deploying, and maintaining Java components. Halloway begins by showing how to use, control, and troubleshoot components. He offers real-world guidance on reflection performance, and demonstrates how reflection is used to build the Java serialization architecture. He also offers detailed coverage of using the Java Native Interface (JNI) to control the boundaries between Java code and components written in other environments. In Part II, Halloway presents a practical vision for using component services to become a more effective Java developer. Through examples and sample code, he introduces generative programming techniques that leverage Java into high performance. Finally, building on these techniques, he shows how to construct robust interoperability between Java and Win32/COM.
Price: $31.27
You Save: $8.72 (22%)
- If you're serious about writing components in Java, this book focuses on the component services you need to master. DevelopMentor Chief Scientist Stuart Halloway presents unprecedented, in-depth coverage of writing, deploying, and maintaining Java components. Halloway begins by showing how to use, control, and troubleshoot components. He offers real-world guidance on reflection performance, and demonstrates how reflection is used to build the Java serialization architecture. He also offers detailed coverage of using the Java Native Interface (JNI) to control the boundaries between Java code and components written in other environments. In Part II, Halloway presents a practical vision for using component services to become a more effective Java developer. Through examples and sample code, he introduces generative programming techniques that leverage Java into high performance. Finally, building on these techniques, he shows how to construct robust interoperability between Java and Win32/COM.
