Job Vranish wrote:
Hoogle is a great tool for finding haskell functions:
http://www.haskell.org/hoogle/
You can punch in the type of a function you want and it will give you
a list of functions that might do what you need.
Generalizing the types a bit usually helps. Searching for either m a
-> n m a or IO a -> m a would give you 'lift' and 'liftIO' as
one of the top results.
Is there a tool anywhere which can figure out how to construct a
function with a specific type signature? Hoogle works if the thing you
seek is a single function, but not so much if you need to throw several
functions together.
(For example, the signature "x -> [x -> y] -> [y]" can be implemented by
\ x -> map ($ x), but this is initially non-obvious.)
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
