Modules

Modules

1. Loading modules

   • Haskell Script
     • Syntax
       • import <module name>
     • Selectively import
       • import Data.List (nub, sort)
     • Except import
       • import Data.List hiding (hub)
     • Qualified imports
       • import qualified Data.Map
       • import qualified Data.Map as M
   • Using GHCI
     • :m + Data.List
     • :m + Data.List Data.Map Data.Set

2. What are Haskell Modules?

   • Collection of
     • Functions
     • Types
     • Typeclasses

3. Data.List

   • Join or Insert
     • intersperse
     • intercalate
     • transpose
     • concat
     • concatMap
     • group
     • unlines
     • unwords
     • union
     • intersect
     • insert
   • Operators
     • and
     • or
     • any
     • all
   • Iterate lists
     • iterate
     • splitAt
     • takeWhile
     • dropWhile
     • span
     • sort
     • inits
     • tails
   • Search
     • isPrefixOf
     • isSuffixOf
     • elem
     • notElem
     • find
     • elemIndex
     • elemIndices
     • findIndex
     • findIndex
   • Separate Lists
     • partition
     • lines
     • words
   • Drop
     • nub
     • delete
     • \

4. Data.Char

   • Check assumption
     • isControl
     • isSpace
     • isLower
     • isUpper
     • isAlpha
     • isAlphaNum
     • isPrint
     • isDigit
     • isOctDigit
     • isHexDigit
     • isLetter
     • isMark
     • isNumber
     • isPunctuation
     • isSymbol
     • isSeparator
     • isAscii
     • isLatin1
     • isAsciiUpper
     • isAsciiLower
   • Convertions
     • toUpper
     • toLower
     • toTitle
     • digitToInt
     • intToDigit
     • ord

5. Data.Map

   • Transform or create
     • fromList
     • singleton
     • toList
     • fromListWith
   • Check or search
     • null
     • lookup
     • map
     • filter
   • Represent or report
     • empy
     • size
     • member
   • Join or insert
     • insert
     • insertWith

6. Data.Set

   • Important functions
     • intersection
     • difference
     • union
     • delete

7. Making our own modules

   • Steps to make a module
     • Specify the module name
     • Export the functions
     • Import the module
   • Modules with hierarchical structures
     • Make a folder with the name of the module
     • Create the files inside the folder
     • Import the module
       • import <folder name> . <file name>