This is a solution not changing original list:
import Html exposing (text)
import String exposing (toUpper)
main =
text (toString sortedList)
sortedList : List String
sortedList =
[ "c", "B" , "a" ] |> List.sortWith compareIgnoreCase
compareIgnoreCase : String -> String -> Order
compareIgnoreCase a b =
case compare (toUpper a) (toUpper b) of
LT -> LT
EQ -> EQ
GT -> GT
Efficiency can be improved by keeping a cache of already upper cased
letters.
On Friday, September 9, 2016 at 5:45:01 PM UTC+2, Rudolf Bargholz wrote:
>
> Hi,
>
> Failing here dismally, so I hope someone here is kind enough to help out.
>
> *Problem*: I have a list of strings and want to sort the list independant
> of the case of the chars in the string
>
> What I have so far:
>
> > import List
> > import String
> > unorderedList = [ "c", "B" , "a"]
> ["c","B","a"] : List String
> > orderedList = List.sort unorderedList
> ["B","a","c"] : List String
> > orderedList2 = unorderedList |> List.map String.toUpper |> List.sort
> ["A","B","C"] : List String
>
>
> What I am trying to acheive is the following result:
>
> ["a","B","c"] : List String
>
> I must be overlooking something easy.
>
> Could anyone point me in the right direction how I can accomplish this?
> Is there any resource that has numerous Elm examples on how to use
> *List.sort*, *List.sortBy* and *List.sortWith*?
>
> Regards
>
> Rudolf Bargholz
>
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