Option, List, Future, Result, need I go on?
Fair -- I wish they hadn't reserved `?` for `try!` though. Do notation is more about unwrapping
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Yeah it's a huge waste of `?` -- would have preferred making it into `map` like C#/Swift.
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I kinda liked how Scala approached `for` notation where `=` is `map` and `<-` is `flatMap`
End of conversation
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