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[Exercism](https://exercism.io/) is a Free Software code learning platform run by a nonprofit. In a lot of ways it's a better alternative to the likes of Hackerrank, Coderbyte, Codecademy, etc. since anyone can [become a maintainer of a new language track](https://exercism.io/become-a-maintainer) , and of course there's no profit motive to lock things up behind paywalls.
Idris
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Idris
pangyuehung
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4 years ago
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100%