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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 Mar 11

      Here's how you can write a simpler (one-parameter) Y-combinator in Scala 3. The methods `y` and `recurse` would be defined in a library, then you would just call `recurse` when you want to recurse.pic.twitter.com/DLqYoO6QmU

      5 replies 6 retweets 57 likes
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    2. Jon Pretty‏ @propensive Mar 11

      Unlike the best Y-combinator attempt in Scala 2, you don't need to write a lambda that looks like { f => x => ... }. The result is that you can actually basically the syntax you would want to write point-free recursive methods.

      1 reply 0 retweets 5 likes
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    3. This Tweet is unavailable.
      Jon Pretty‏ @propensive Mar 11
      Replying to @stewSqrd

      Thanks! The `f` is straight out of lambda calculus, so I think basically every other language will write the `f =>` explicitly, in some form.

      11:30 PM - 11 Mar 2021 from Frankfurt on the Main, Germany
      0 replies 0 retweets 0 likes

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