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Counting all elements in a list is a one-liner in Haskell:
count xs = toList (fromListWith (+) [(x, 1) | x <- xs])
Here is an example usage:
*Main> count "haskell scala"
[(' ',1),('a',3),('c',1),('e',1),('h',1),('k',1),('l',3),('s',2)]
Can this function be expressed so elegantly in Scala as well?
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