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What does a fullstop or period or dot (.) mean in Haskell?

This is such a general question, but I actually don't know why it's there. If you have like: sort.function what does the . actually do? or mean?

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  • possible duplicate of [What does a fullstop or period or dot (.) mean in Haskell?](http://stackoverflow.com/questions/2486564/what-does-a-fullstop-or-period-or-dot-mean-in-haskell) and [Dot Operator in Haskell: need more explanation](http://stackoverflow.com/questions/631284/dot-operator-in-haskell-need-more-explanation) – Mankarse May 02 '12 at 10:59

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Function composition.

(f . g) x is the same as f (g x)

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