How to use the library of Haskell

Question

I am trying to seperate Strings with " ," with "intersperse". (Beginner in Haskell ) But my program refuses to compile , because I get the error "Not in scope intersperse" Therefore I wrote import Data.Char at the top of my program , but the problem keeps refusing to compile.

 import Data.Char

 myShow :: String -> String
 myShow s = concat ["[", intersperse ',' s, "]"]

What to do ? Thanks.

http://stackoverflow.com/questions/1694097/haskell-compiler-error-not-in-scope — wazy, Nov 07 '13 at 20:18

score 0 · Answer 1 · answered Nov 08 '13 at 10:15

0

You have to add

import Data.List

Because intersperse functoion is it's part. So your programm going to look like

 import Data.Char
 import Data.List

 myShow :: String -> String
 myShow s = concat ["[", intersperse ',' s, "]"]

answered Nov 08 '13 at 10:15

JagaJaga

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2

How to use the library of Haskell

1 Answers1