Monads for the Working Haskell Programmer -- a short tutorial

Monads for the Working Haskell Programmer -- a short tutorial
This short tutorial introduces monads to Haskell programmers. It applies to Haskell '98. Gofer programmers (are there any left?) can read it too; there is a section at the end detailing the differences between Haskell and Gofer around monads and another about the differences between Haskell 1.3, Haskell 1.4, and Haskell 98ww.ewalkins.com
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