gistfile1.txt

<jellostahps> so doubling every char of a String is grow :: String -> String
<jellostahps> grow(x:xs) = x:x:grow(xs)
<jellostahps> what about every index of a character is repeated that many times
<jellostahps> input=string output = s t t r r r i i i i n n n n n g g g g g g
<pikajude> grow "string" = "sttrrriiiinnnnngggggg"
<pikajude> may not work for all inputs
<jellostahps> yeah, wondering what i can do to fix it
<jellostahps> would it definitely require a second function
<dmwit> > concat (zipWith replicate [1..] "string")
<lambdabot>  "sttrrriiiinnnnngggggg"
<dmwit> ...but more helpfully:
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<dmwit> jellostahps: Try writing a function which takes *two* arguments: the current index, and the input string starting at that index.
<jellostahps> I have to do it with a single string input
<dmwit> So `foo n (x:xs) = ???`.
<dmwit> Then you can write a single top-level wrapper like `wrapper = foo 1`.
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<dmwit> (Or `wrapper xs = foo 1 xs` if that's more clear to you.)
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<jellostahps> is a wrapper just f(g(x))
<jellostahps> or wrapper . foo 1 xs in this case
<dmwit> No.
<dmwit> It is `wrapper xs = foo 1 xs`. Which is why I wrote that.
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<jellostahps> foo runs with parameter 1 and xs=string, and returns a string i imagine
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<dmwit> Sounds right.
<koz_> > bool 1 2 True
<lambdabot>  2
<jellostahps> wouldnt a variable be better than using '1' here
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<jellostahps> since u have to iterate 1 for the next letter(s)