Optionalかぁ
Replying to @numa08
@numa08 C++のfutureを拡張してモナドやろうぜ っていう提案は存在する http://bartoszmilewski.com/2014/02/26/c17-i-see-a-monad-in-your-future/ …
5:44 AM - 16 Dec 2014
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