[Haskell-beginners] Conciseness question

[David Place]

On Aug 7, 2011, at 3:55 PM, Manfred Lotz wrote:

>> 
>>    import Data.Map (Map, (!), lookup)
>> 
>>    lookup ConfigAppDir myDirs
>>    myDirs ! ConfigAppDir
>> 
> 
> This is the solution I like. I have to accept that here I cannot reach
> the conciseness of which might be due to Haskell being strongly typed.

In your original note, you mentioned that you have a small number of entries in your list of directories.  If so, you might find that association lists work just fine for you without needing to import Data.Map.  

> http://hackage.haskell.org/packages/archive/base/latest/doc/html/Prelude.html#v:lookup