[Haskell-cafe] Signature browser

[Henning Thielemann]

When searching a function in a library I usually scan manually for 
suitable types in the Haddock function overview. I wonder whether this can 
be automated or whether this is even implemented already. I want to enter 
search requests like "a function which takes a predicate and maybe other 
inputs and outputs at least a list". But I'm afraid formulating such a 
request takes more time than manual scan. :-(