Data.List

Basic functions

(++)

head

last

tail

init

null

length

List transformations

map

reverse

intersperse

intercalate

transpose

subsequences

permutations

Reducing lists (folds)

foldl

foldl'

foldl1

foldl1'

foldr

foldr1

Special folds

concat

concatMap

and

or

any

all

sum

product

maximum

minimum

Building lists

Scans

scanl

scanl1

scanr

scanr1

Accumulating maps

mapAccumL

mapAccumR

Infinite lists

iterate

repeat

replicate

cycle

Unfolding

unfoldr

Sublists

Extracting sublists

take

drop

splitAt

takeWhile

dropWhile

dropWhileEnd

span

break

stripPrefix

group

inits

tails

Predicates

isPrefixOf

isSuffixOf

isInfixOf

Searching lists

Searching by equality

elem

notElem

lookup

Searching with a predicate

find

filter

partition

Indexing lists

(!!)

elemIndex

elemIndices

findIndex

findIndices

Zipping and unzipping lists

zip

zip3

zip4

zip5

zip6

zip7

zipWith

zipWith3

zipWith4

zipWith5

zipWith6

zipWith7

unzip

unzip3

unzip4

unzip5

unzip6

unzip7

Special lists

Functions on strings

lines

words

unlines

unwords

"Set" operations

nub

delete

(\\)

union

intersect

Ordered lists

sort

insert

Generalized functions

The "By" operations

User-supplied equality (replacing an Eq context)

nubBy

deleteBy

deleteFirstsBy

unionBy

intersectBy

groupBy

User-supplied comparison (replacing an Ord context)

sortBy

insertBy

maximumBy

minimumBy

The "generic" operations

genericLength

genericTake

genericDrop

genericSplitAt

genericIndex

genericReplicate