Types and Typeclasses - Learn You a Haskell for Great Good!
Believe the type Previously we mentioned that Haskell has a static type system. The type of every expression is known at compile time, which leads to safer code. If you write a program where you try to divide a boolean type with some number, it won't even compile. That's good because it's better to catch such errors at compile time instead of having your program crash. Everything in Haskell has a
Making Our Own Types and Typeclasses - Learn You a Haskell for Great Good!
In the previous chapters, we covered some existing Haskell types and typeclasses. In this chapter, we'll learn how to make our own and how to put them to work! Algebraic data types intro So far, we've run into a lot of data types. Bool, Int, Char, Maybe, etc. But how do we make our own? Well, one way is to use the data keyword to define a type. Let's see how the Bool type is defined in the standar
Chapters - Learn You a Haskell for Great Good!
Introduction About this tutorial So what's Haskell? What you need to dive in Starting Out Ready, set, go! Baby's first functions An intro to lists Texas ranges I'm a list comprehension Tuples Types and Typeclasses Believe the type Type variables Typeclasses 101 Syntax in Functions Pattern matching Guards, guards! Where!? Let it be Case expressions Recursion Hello recursion! Maximum awesome A few m
Learn You a Haskell for Great Good!
Hey yo! This is Learn You a Haskell, the funkiest way to learn Haskell, which is the best functional programming language around. You may have heard of it. This guide is meant for people who have programmed already, but have yet to try functional programming. The whole thing is completely free to read online, but it's also available in print and I encourage you to buy as many copies as you can aff
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