AString is a list of characters. String constants in Haskell are values of typeString.

Class for string-like datastructures; used by the overloaded string extension (-XOverloadedStrings in GHC).

Methods

fromString ::String -> aSource#

Instances

lines breaks a string up into a list of strings at newline characters. The resulting strings do not contain newlines.

Note that after splitting the string at newline characters, the last part of the string is considered a line even if it doesn't end with a newline. For example,

>>>lines ""[]

>>>lines "\n"[""]

>>>lines "one"["one"]

>>>lines "one\n"["one"]

>>>lines "one\n\n"["one",""]

>>>lines "one\ntwo"["one","two"]

>>>lines "one\ntwo\n"["one","two"]

Thuslines s contains at least as many elements as newlines ins.

words breaks a string up into a list of words, which were delimited by white space.

>>>words "Lorem ipsum\ndolor"["Lorem","ipsum","dolor"]

unlines is an inverse operation tolines. It joins lines, after appending a terminating newline to each.

>>>unlines ["Hello", "World", "!"]"Hello\nWorld\n!\n"

unwords is an inverse operation towords. It joins words with separating spaces.

>>>unwords ["Lorem", "ipsum", "dolor"]"Lorem ipsum dolor"