firstPart_<Modules>

firstPart_<Modules>

1. collection of related functions, types and typeclasses

2. you can reuse them later

3. Data.List

   • length
     • length . nub
   • nub
   • :m + Data.List Data.Map Data.Set
     • import qualified Data.Map as M
   • import Data.List (nub, sort)
   • import Data.List hiding (nub)
   • intersperse
     • interleaved element
   • intercalate
     • interleaved list
   • transpose
     • transform the list in a matriz take the colums and became to rows
   • concatMap
     • concatMap (replicate 4) [1..3] [1,1,1,1,2,2,2,2,3,3,3,3]
   • and
     • validate that everything is true
   • or
     • validate that something is true
   • iterate
   • splitAt
     • Take a number and a list and split the list in the number
   • takeWhile
     • take elements until you find the one that entered, there it cuts
   • dropWhile
     • similar to takeWhile but drop the elements until find the entered
   • takeWhile
   • span
   • sort
   • group
   • elem
     • notElem
   • partition

4. Data.Char

   • isControl
   • isSpace
   • isLower
   • isUpper
   • isAlpha
   • isAlphaNum
   • isPrim
   • isDigit
   • isOctDigit
   • isHexDigit
   • isLetter
   • isMark
   • isNumber
   • isPunctuation
   • isSymbol
   • isSeparator
   • isAscii
   • isLatin1
   • isAsciiUpper
   • isAsciiLower

5. Data.Map

   • fromList
   • empty
   • insert
   • null
   • size
   • singleton
   • lookup

6. Data.Set

   • fromList
   • Mathematical operations between sets
   • difference
   • union