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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 6 Mar 2020

      Does Scala even need the `try` keyword, and must `catch` be a keyword? I'd be happy to call `.catch(partialFunction)` directly on an expression or code block. It could be implemented as an extension method.

      15 replies 7 retweets 77 likes
    2. Jakub Kozłowski‏ @kubukoz 6 Mar 2020
      Replying to @propensive

      If it's possible to implement as efficiently as normal try/catch, and to opt-out (so that `catch` can be provided as an extension in e.g. MonadError, which would be nice), then sure

      1 reply 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 6 Mar 2020
      Replying to @kubukoz

      Scala 3 could inline it, but Scala 2 would need an additional allocation and stack frame (or two...).

      1 reply 0 retweets 0 likes
    4. Jakub Kozłowski‏ @kubukoz 6 Mar 2020
      Replying to @propensive

      Or a macro 🥰

      2 replies 0 retweets 0 likes
    5. Jakub Kozłowski‏ @kubukoz 6 Mar 2020
      Replying to @kubukoz @propensive

      But we can't change it in Scala 2 anyway.

      1 reply 0 retweets 0 likes
      Jon Pretty‏ @propensive 6 Mar 2020
      Replying to @kubukoz

      I'm sure you could make a 1-bit change to the Scala 2 parser and you could start using `catch` as a method name...

      3:30 PM - 6 Mar 2020
      0 replies 0 retweets 0 likes

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