#export header css js query
Instant is off | Search plugin | Manual | $#homepage$
#homepage haskell.org #export footer version
#search $&query$ #export welcome

# Welcome to Hoogle

- Links
- Haskell.org
- Hackage
- GHC Manual
- Libraries

Hoogle is a Haskell API search engine, which allows you to search many standard Haskell libraries by either function name, or by approximate type signature.

Example searches:
$query=map$ $#search$
$query=(a -> b) -> [a] -> [b]$ $#search$
$query=Ord a => [a] -> [a]$ $#search$
$query=Data.Map.insert$ $#search$
Enter your own search at the top of the page.

The Hoogle manual contains more details, including further details on search queries, how to install Hoogle as a command line application and how to integrate Hoogle with Firefox/Emacs/Vim etc.

I am very interested in any feedback you may have. Please email me, or add an entry to my bug tracker.

#export parseError

# $!errFormat$

Parse error: $&errMessage$

For information on what queries should look like, see the user manual.