Monads/Writer monad: Difference between revisions
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=={{header|Factor}}==
{{works with|Factor|0.99 2019-10-06}}▼
Factor comes with an implementation of Haskell-style monads in the <code>monads</code> vocabulary.
▲{{works with|Factor|0.99 2019-10-06}}
<lang factor>USING: kernel math math.functions monads prettyprint ;
FROM: monads => do ;
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