haskell: filtering Strings with a certain symbol e.g '!' in a List? -


i have list of strings : ["1*1", "ab!c", "cde2", "efghi!"] want sort out every string '!'. first idea : filter (map elem '!' (list)) list string map elem '!' (list), thats not working because checkups string , not elements of strings in list...

thanks help!

you mapped much.

filter ('!' `elem`) list

should work you....

explanation:

you have list of strings [string]. string list of chars, because string = [char]...

so have list of lists. [[char]] since elem works checking if single element exists in list, can call elem on each list item outer list.


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