Hi,

    I am now writing a function that replaces vowels with the letter x. eg.put in a string "help" and out comes hxlp.

I tried this:

 

f x = case x of
   
      {'a' -> 'x';'e' -> 'x';'i' -> 'x';'o' -> 'x';'u' -> 'x';_ -> x}

 

but this wont work on strings, only on the individual letters. Any direction would be very welcome.

 

Yours 

 

john