This easy-to-use, fast-moving tutorial introduces you to functional programming with Haskell. You'll learn how to use Haskell in a variety of practical ways, from short scripts to large and demanding applications. Real World Haskell takes you through the basics of functional programming at a brisk pace, and then helps you increase your understanding of Haskell in real-world issues like I/O, performance, dealing with data, concurrency, and more as you move through each chapter. With this book, you will: Understand the differences between procedural and functional programming Learn the features of Haskell, and how to use it to develop useful programs Interact with filesystems, databases, and network services Write solid code with automated tests, code coverage, and error handling Harness the power of multicore systems via concurrent and parallel programming You'll find plenty of hands-on exercises, along with examples of real Haskell programs that you can modify, compile, and run. Whether or not you've used a functional language before, if you want to understand why Haskell is coming into its own as a practical language in so many major organizations, Real World Haskell is the best place to start.

Autorentext

Bryan O'Sullivan is an Irish hacker and writer who likes distributed systems, open source software, and programming languages. He was a member of the initial design team for the Jini network service architecture (subsequently open sourced as Apache River). He has made significant contributions to, and written a book about, the popular Mercurial revision control system. He lives in San Francisco with his wife and sons. Whenever he can, he runs off to climb rocks.

John Goerzen is an American hacker and author. He has written a number of real-world Haskell libraries and applications, including the HDBC database interface, the ConfigFile configuration file interface, a podcast downloader, and various other libraries relating to networks, parsing, logging, and POSIX code. John has been a developer for the Debian GNU/Linux operating system project for over 10 years and maintains numerous Haskell libraries and code for Debian. He also served as President of Software in the Public Interest, Inc., the legal parent organization of Debian. John lives in rural Kansas with his wife and son, where he enjoys photography and geocaching.

Don Stewart is an Australian hacker based in Portland, Oregon. Don has been involved in a diverse range of Haskell projects, including practical libraries, such as Data.ByteString and Data.Binary, as well as applying the Haskell philosophy to real-world applications including compilers, linkers, text editors, network servers, and systems software. His recent work has focused on optimizing Haskell for high-performance scenarios, using techniques from term rewriting.

Zusammenfassung
Introduces you to functional programming with Haskell. This book takes you through the basics of functional programming and helps you increase your understanding of Haskell in real-world issues like I/O, performance, dealing with data, and concurrency.

Inhalt

Dedication
Preface
Chapter 1: Getting Started
Chapter 2: Types and Functions
Chapter 3: Defining Types, Streamlining Functions
Chapter 4: Functional Programming
Chapter 5: Writing a Library: Working with JSON Data
Chapter 6: Using Typeclasses
Chapter 7: I/O
Chapter 8: Efficient File Processing, Regular Expressions, and Filename Matching
Chapter 9: I/O Case Study: A Library for Searching the Filesystem
Chapter 10: Code Case Study: Parsing a Binary Data Format
Chapter 11: Testing and Quality Assurance
Chapter 12: Barcode Recognition
Chapter 13: Data Structures
Chapter 14: Monads
Chapter 15: Programming with Monads
Chapter 16: Using Parsec
Chapter 17: Interfacing with C: The FFI
Chapter 18: Monad Transformers
Chapter 19: Error Handling
Chapter 20: Systems Programming in Haskell
Chapter 21: Using Databases
Chapter 22: Extended Example: Web Client Programming
Chapter 23: GUI Programming with gtk2hs
Chapter 24: Concurrent and Multicore Programming
Chapter 25: Profiling and Optimization
Chapter 26: Advanced Library Design: Building a Bloom Filter
Chapter 27: Sockets and Syslog
Chapter 28: Software Transactional Memory
Installing GHC and Haskell Libraries
Characters, Strings, and Escaping Rules
Colophon