Rosetta Code:Village Pump
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Hi, sorry to post this here but I don't know a better place. I wanted to create a new proposed task "Create statically-validated API" but it's impossible to create a page without solving a captcha, and the browser I use doesn't show the captcha (I was able to create this account using a phone browser, but that's no good for entering much text or code). Maybe someone can move it to the right place? (Added: I also had to de-link the urls to bypass the captcha).
By the way I find this site a huge pain to use because of the captchas. Email verification for account creation is likely to be enough.
create statically-validated APIEdit
This is a challenge proposed by Tony Morris here:
blog.tmorris.net/posts/understanding-practical-api-design-static-typing-and-functional-programming/
It is only for statically-typed languages and the challenge is to implement a Tic-tac-toe API that supports operations like starting a game, making a move, and seeing who won, where invalid arguments (such as asking who won an unfinished game) are rejected by the compiler as compile-time type errors. So it is mostly a test of how expressive the language's type system is.
A Haskell solution (not by me) is here:
github.com/tismith/tictactoe-haskell/blob/master/Tictactoe.hs
Further discussion and links to some other solutions:
github.com/data61/fp-course/blob/master/projects/TicTacToe/TicTacToe.markdown