Haskell - [Int] -> String

Question

Is there an easy way to change [Int] -> String ? My output function returns a list of int but the format should be a string as in the example below

example: [1,2,3,4] -> 1 2 3 4

@PRVS That one does more work, also involving non-base-10 representations. — chi
– chi, Commented Mar 4, 2016 at 10:09

chi · Accepted Answer · 2016-03-04 10:36:49Z

7

To turn an integer into a string, use show.

To turn a list of integers into a list of strings, use map show.

To add " " between every string in a list of strings, use intersperse " ". (Requires import Data.List)

To concatenate a list of strings, use concat.

Alternative: try unwords ["a","b","c"] in GHCi.

answered Mar 4, 2016 at 10:05

chi

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1 Comment

Thanks, that's exactly what I needed. I was unsure what to do after map show, but you made it clear enough. Thumbs up!