Updated, removed projects sections.
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Yann Esposito (Yogsototh)
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@ -72,24 +72,22 @@ Our main rule is to use as few features of a programming language as
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possible to achieve your goal.
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This is a kind of merge between minimalism and pragmatism that in the end
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provide a tremendous amount of benefits.
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This is why, even if I like to play with the latest Haskell trendy feature,
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This is why, even if I like to play with the latest Haskell trendy features,
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I generally program without those.
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With just a very few amount of Haskell features you will already be in
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enviromnent with a *lot* of benefits as compared to many programming
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languages.
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So enough talk, here is my old article new again, with just a few changes
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and cleanup.
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Also, I will try to go a bit further than before.
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By the end of this article you should be autonomous if you want to create a
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new product in Haskell.
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Be it a simple command line tool or a web application.
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If you are going toward GUI programming, this is a whole subject on its own
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and I do not really mention it.
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So enough talk, here is my old article updated with a few changes and
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cleanups.
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I also added a section about how to create a new project template with nix.
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My .02 for "Single Page Application" choice is to use Purescript with the
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halogen framework.
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Purescript is really awesome as well as halogen.
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I will try to write other articles about how to write a real program in
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Haskell.
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I tried to add those to this already long article, but, it occurs to be
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more work than expected.
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So I preferred stop at this point for now and provide separate articles in
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the future related to Haskell application development.
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#+end_quote
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* Introduction
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@ -162,7 +160,7 @@ The article contains five parts:
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- More on infinite tree; a more math oriented discussion about
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infinite trees
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** Helpers :noexport:
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** Helpers :noexport:
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:PROPERTIES:
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:CUSTOM_ID: helpers
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:END:
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@ -2306,7 +2304,7 @@ After a bit of experience, most Haskellers can avoid memory leaks naturally.
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* Dive into the impure
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:PROPERTIES:
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:CUSTOM_ID: hell-difficulty-part
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:CUSTOM_ID: dive-into-the-impure
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:END:
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Congratulations for getting so far!
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@ -3466,29 +3464,23 @@ monads[fn:7]!
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* Start swimming
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:PROPERTIES:
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:CUSTOM_ID: difficulty--hell
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:CUSTOM_ID: start-swimming
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:END:
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If you come this far, you can really congratulate yourself.
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This is already what I would personnaly call a tremendous achievement.
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From now on, this is more or less a free space.
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You should understand the essence of the Haskell language.
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But now, to really be able to create something useful, you will need to
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also understand not only the language but the ecosystem around it.
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This chapter will focus on how to build applications with Haskell.
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How to use libraries inside your project.
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And perhaps provide a few pointers to start to organize your projects.
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Note application development is easier to introduce than library development.
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Mostly because dependency management will be a lot easier.
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#+begin_notes
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If you find those part too hard, do not feel discouraged though, most
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Haskeller I know had to dig into Haskell at least two or three times before
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it really "clicked" for them.
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#+end_notes
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I first intended to provide a lot more informations about how to create a
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project and provide a few project examples.
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But it occurs this is harder than I first expected.
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So I will just provide the introduction about how to create a starting
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point with many pointers for other possible options.
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** Start a new project
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:PROPERTIES:
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@ -4076,46 +4068,21 @@ test-suite my-app-test
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You can download the final cabal file: [[file:my-app/my-app.cabal][my-app.cabal]]
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** Command line application
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* Conclusion
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:PROPERTIES:
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:CUSTOM_ID: command-line-application
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:CUSTOM_ID: conclusion
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:END:
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One of the simplest while still useful command line utility I can think of
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is a simple strong password generator.
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This was a re-written fast Haskell tutorial.
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I will certainly complete this with more advanced tutorial explaining how
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to write a few Haskell projects.
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*** Password Generator
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:PROPERTIES:
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:CUSTOM_ID: password-generator
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:END:
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Create a new project named =hspwg= (HaSkell PassWord Generator).
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If you do not want to go through the process of creating a new project form
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scratch again you can download an archive here: [[file:hspwg.init.tar.gz]].
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Let us write the most basic application possible.
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Edit the file =src/Main.hs= with:
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#+begin_src haskell
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#+end_src
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** Web Application
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:PROPERTIES:
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:CUSTOM_ID: web-application
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:END:
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* Difficulty: Hell
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:PROPERTIES:
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:CUSTOM_ID: difficulty--hell-be9a
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:END:
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This part will be for advanced Haskell code.
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Thanks for reading it.
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* Thanks
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:PROPERTIES:
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:CUSTOM_ID: thanks
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:END:
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:PROPERTIES:
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:CUSTOM_ID: thanks
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:END:
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Thanks to [[http://reddit.com/r/haskell][=/r/haskell=]] and [[http://reddit.com/r/programming][=/r/programming=]].
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Your comment were most than welcome.
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