[Haskell-cafe] Haskell - string to list isusses, and more

Toby Miller toby at miller.ms
Sun Jun 14 12:25:04 EDT 2009

Here's what I came up with.  I especially like the 2nd version, even  
though it's longer, as it seems very declarative.

caps1 s = all (\x -> isUpper (head x)) (words s)

caps2 s = all startsWithUpper (words s) where
     startsWithUpper w = isUpper (head w)

I'm also fairly new to Haskell, so I would appreciate feedback from  
the more experienced.


On Jun 14, 2009, at 11:19 AM, Gjuro Chensen wrote:

> Hello everyone!
> Im a Haskell newbie, and Ive have few unanswered questions. For  
> someone more
> experienced (at least I think so) its a very simple task, but I just  
> cant
> get a grip on it and its pretty frustrating. It wouldn't be that bad  
> if I
> haven't browse thru bunch of pages and tutorials and still nothing...
> The problem is: take a string, and if every words starts with  
> uppercase
> letter then print yes, else no.
> Forum Text Bold -> yes
> Frog image File -> no
> Ive had my share of approaches to this, but I just cant make it work.
> Standard one seemed the most simple:
> search :: String -> String
> search [] = []
> and then use words (splits string on space) to split the string so I  
> could
> get a list and go through it recursively. But how to apply words to  
> entered
> string in this form?
> To find the first letter I came up with: first = take 1 (head x). And
> compare it with elem or ASCII values to determine if its upper case.
> Any help, advice or suggestion is appreciated.
> Thanks in advance!
> -- 
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