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Effective Haskell
book

Effective Haskell

by Rebecca Skinner
July 2023
Intermediate to advanced
670 pages
17h 13m
English
Pragmatic Bookshelf
Content preview from Effective Haskell

Exercises

A Configurable Status Line for HCat

Using what you’ve learned in this chapter, revisit the HCat application that you built earlier. Update HCat to support a configurable status bar that will show up at the bottom of the output. The status bar configuration should be stored on disk in a configuration file (for example ~/.config/hcat.conf). Allow users to specify which fields they want to see, what order they should appear in, and the maximum width of each field.

Command Line Argument Parsing

Several of the examples that you’ve worked on in this book have required you to deal with command line arguments. So far, we’ve dealt with this in an ad hoc manner. Using what you’ve learned in this chapter, try to build a library to make it easier ...

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Publisher Resources

ISBN: 9798888650400Errata Page