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| - | ====== Introduction to the Haskell language ====== | + | ====== 1. Introduction to the Haskell language ====== |
| The main (and, as we shall soon see, the only!) programming instrument in Haskell is the **function**. In mathematics, a function is a **relation** between specified sets ($math[f:A\rightarrow B]) that associates to every element of $math[A], exactly one element of $math[B]. This is precisely the interpretation of a function in Haskell. (Not to be confused with OOP **methods** or **procedures**). | The main (and, as we shall soon see, the only!) programming instrument in Haskell is the **function**. In mathematics, a function is a **relation** between specified sets ($math[f:A\rightarrow B]) that associates to every element of $math[A], exactly one element of $math[B]. This is precisely the interpretation of a function in Haskell. (Not to be confused with OOP **methods** or **procedures**). | ||