Hole driven development - Greg Davis
When writing Haskell programs, we tend to use lots of polymorphic types. That's good! We can reuse those pieces, thanks to the types. But when implementing polymorphic functions, it can sometimes be difficult to see how things fit together, especially if we don't have a systematic approach.
At a recent Haskell course taught by members of this group, I discovered such an approach, which we call "hole driven development". I'll demonstrate the technique, including some tricks to get help from the compiler. I'll also preview an exciting new language feature which will hit the Haskell platform soon.
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