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    Just bought the MEAP. I’m really liking it so far. I think I’m finally starting to wrap my mind around dependent types. The printf function is so cool.

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      I also made a video on how to implement the printf function in Idris if you’re interested:

      https://youtu.be/fVBck2Zngjo

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        I’ve also been enjoying the MEAP. It has the most readable explanation of totality I’ve found so far. (Someone asked me to define this on Twitter a while back, and I had a hard time finding an explanation aimed at programmers instead of mathematicians.) I especially liked this bit: “…knowing that a function is total allows us to make much stronger claims about its behaviour based on its type.” Very clear and focused on the practical benefits to the programmer.

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          Have to say I agree with the totality explanation being quite good. Overall it is a pretty good start.