List of strings to list of chars - [[Char]] to [Char] haskell

Question

I need to convert list like this ["a","b","c"] to this ['a','b','c']. The thing is i used

splitOn

function which gave me [[Char]] from [Char]. Is there a way to convert this list of string to list of char? Assuming strings are length of 1 of course.

What do you want to do if any of the strings aren't length 1? — Lee
– Lee, Commented Feb 27, 2018 at 15:08
You might also want to use hoogle for those kind of questions. Given signatures it usually spits out some useful pointers. — matthias krull
– matthias krull, Commented Feb 27, 2018 at 18:52
I tried it, only thing with this signatures found was unlines and unwords. Which does not work for me. But thanks for your point. — nocturne
– nocturne, Commented Feb 27, 2018 at 18:54

willeM_ Van Onsem · Accepted Answer · 2018-02-27 15:08:33Z

4

Yes, you can use concat :: [[a]] -> [a]:

Prelude> concat ["a","b","c"]
"abc"

Since a String is a type alias for [Char], so "abc" is short for ['a', 'b', 'c']:

Prelude> concat ["a","b","c"] == ['a', 'b', 'c']
True

answered Feb 27, 2018 at 15:08

willeM_ Van Onsem

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1 Comment

nocturne Over a year ago

It worked thanks! I will mark this as right answer later.

Chad Gilbert · Accepted Answer · 2018-02-27 15:08:26Z

4

concat ["a", "b", "c"] will give you the string "abc" which is the same as ['a', 'b', 'c']

answered Feb 27, 2018 at 15:08

Chad Gilbert

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