Cookbook/Interactivity

(Difference between revisions)

Revision as of 09:04, 2 August 2009

Problem	Solution	Examples
printing a string	putStr	Prelude> putStr "Foo" FooPrelude>
printing a string in a new line	putStrLn	Prelude> putStrLn "Foo" Foo
reading a string	getLine	Prelude> getLine Foo bar baz --> "Foo bar baz"

TODO

@@ Line 27: / Line 27: @@
 |}
-== Printing a string ==
-Strings can be output in a number of different ways.
-<haskell>
-Prelude> putStr "Foo"
-FooPrelude>
-</haskell>
-As you can see, [http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3AputStr putStr] does not include the newline character `\n'.  We can either use putStr like this:
-<haskell>
-Prelude> putStr "Foo\n"
-Foo
-</haskell>
-Or use [http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3AputStrLn putStrLn], which is already in the Standard Prelude
-<haskell>
-Prelude> putStrLn "Foo"
-Foo
-</haskell>
-We can also use [http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3Aprint print] to print a string, '''including the quotation marks.'''
-<haskell>
-Prelude> print "Foo"
-"Foo"
-</haskell>
 == Parsing command line arguments ==
 TODO