Haskell - Starting Out

Haskell - Starting Out

1. Haskell is a functional lenguage

   • Is very explicit in his functions
   • Can't combine different types of data
     • e.g. 5 + True
   • Haskell have many functions already defined
     • The functions have the value not the variables

2. Functions are defined in a similar way that they are called

   • We use ' to either denote a strict version of a function

3. We can name our functions

   • The functions can't begin with uppercase letters

4. Haskell allows to work with lists

   • We can name our lists
   • Strings are just lists of characters
     • ['H','E','L','L','O']
   • Can put to lists together with ++ or :
     • When use ++ Haskell walks through the whole list on the left side of the ++
     • To put something at the beginning of a list use the :
   • In Haskell the lists have a particular structure
     • The head is the first element in the list
     • The tail is the all list less the head
     • Last is the last element in the list
     • Init is the all list less the last element in the list
   • The lists can be created starting from ranges or limits
     • e.g. [1..20]
     • You can also use ranges to make infinite lists by just not specifying an upper limit.
   • You can create lists comprehension
     • hey're normally used for building more specific sets out of general sets