[Haskell-cafe] Lists of Lists

[zell_ffhut]

Im afraid im baffled again!

Im now trying to add a char to a string of strings (eg - ["434233434"
"444929192" "909313434"]

Im sure i can use my previous function to help me achive this, but i can't
seem to get it workinging

> charToGrid :: Char -> Position -> Grid -> Grid
> charToGrid c (row,col) g = concat g (changeValue c(row*9 + col)) 

Im not sure i should be using concat, as i have to return a grid as it was
given, just with the added char.
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