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propensive's profile
Jon Pretty
Jon Pretty
Jon Pretty
@propensive

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Jon Pretty

@propensive

Supporting Scala through professional training and open-source software. Responsible for Magnolia, Fury, Scala World and Functional Africa.

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propensive.com
Joined July 2010

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    1. Jon Pretty‏ @propensive Feb 9

      I want to define a tripartite `Result` type which represents success, expected failure and unexpected failure (not for the first time I've tried but I have union types now!). It would be nice if I could find three equal-length words which convey these concepts. Which do you like?

      86 replies 4 retweets 16 likes
    2. Alessandro Agnelli‏ @__aleagnelli__ Feb 10
      Replying to @propensive

      Do you already considered a classic Success, Failure and then Failure can be either Expected or Unexpect?

      1 reply 0 retweets 2 likes
    3. Jon Pretty‏ @propensive Feb 10
      Replying to @__aleagnelli__

      Oh, so there would be an extra layer to the type hierarchy? It's a definite possibility, though I think that modeling it as three peer subtypes would be easier to work with in most cases, *but* an extra "Failure" extractor could be useful to unify the two kinds of failure!

      1 reply 0 retweets 0 likes
    4. Etuka Onono‏ @hardlianotion Feb 10
      Replying to @propensive @__aleagnelli__

      It could have the virtue of drop-in compatibility with existing concepts - I guess it depends on how many other new things it comes with?

      1 reply 0 retweets 0 likes
    5. Jon Pretty‏ @propensive Feb 10
      Replying to @hardlianotion @__aleagnelli__

      Would explicit conversions to other types like `Option` and `Try` be enough?

      1 reply 0 retweets 1 like
    6. Alessandro Agnelli‏ @__aleagnelli__ Feb 10
      Replying to @propensive @hardlianotion

      For the failure it could be good to have an `Either` conversion (`Right` expect, `Left` unexpected), but that depends on what you need

      1 reply 0 retweets 2 likes
      Jon Pretty‏ @propensive Feb 10
      Replying to @__aleagnelli__ @hardlianotion

      Yes, that makes sense too.

      2:41 AM - 10 Feb 2021
      • 1 Like
      • Alessandro Agnelli
      0 replies 0 retweets 1 like

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