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Haskell High Performance Programming

You're reading from   Haskell High Performance Programming Write Haskell programs that are robust and fast enough to stand up to the needs of today

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Product type Paperback
Published in Sep 2016
Publisher Packt
ISBN-13 9781786464217
Length 408 pages
Edition 1st Edition
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Author (1):
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Samuli Thomasson Samuli Thomasson
Author Profile Icon Samuli Thomasson
Samuli Thomasson
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Table of Contents (16) Chapters Close

Preface 1. Identifying Bottlenecks FREE CHAPTER 2. Choosing the Correct Data Structures 3. Profile and Benchmark to Your Heart's Content 4. The Devil's in the Detail 5. Parallelize for Performance 6. I/O and Streaming 7. Concurrency and Performance 8. Tweaking the Compiler and Runtime System (GHC) 9. GHC Internals and Code Generation 10. Foreign Function Interface 11. Programming for the GPU with Accelerate 12. Scaling to the Cloud with Cloud Haskell 13. Functional Reactive Programming 14. Library Recommendations Index

Pretty-printing and text formatting


The libraries in this subsection are as follows:

  • wl-pprint-* packages: Pretty-printers based on Wadler/Leijen pretty-printers. Multiple implementations with different features are found in similarly named libraries.

  • text-format: High-performance text formatting.

  • interpolateInterpolate: Simple string interpolation using Template Haskell.

  • here: Docs for Haskell using Template Haskell.

Pretty-printing is the process of turning data into user-friendly text format. Think, for instance, of printing a long string with appropriate line breaks, or printing Haskell values in a friendly way, in other words, commas at the beginning of lines and so on.

The Wadler/Leijen pretty-printer is a simple but powerful interface that has multiple implementations: nearly a dozen packages with wl-pprint in their name. Some add support for ANSI terminal colors, or terminfo support, annotations, one even using a free monad for documents. Unfortunately, no single implementation admits...

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