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wycats's profile
Yehuda Katz 🥨
Yehuda Katz 🥨
Yehuda Katz  🥨
Verified account
@wycats

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Yehuda Katz  🥨Verified account

@wycats

Tilde Co-Founder, OSS enthusiast and world traveler.

Portland, OR
yehudakatz.com
Joined August 2007

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    1. Yehuda Katz  🥨‏Verified account @wycats Aug 21

      ES2015 symbols (originally, at least, from Racket) are an underappreciated innovation that make it easier to build and communicate good OO designs (in the Smalltalk sense).

      6 replies 5 retweets 68 likes
    2. Sam Tobin-Hochstadt‏ @samth Aug 21
      Replying to @wycats

      I think similar features have existed for a long time in other OO systems such as Smalltalk and CL. The most Racket-inspired parts of @littlecalculist's original `private` proposal got dropped along the way. But overall, definitely a win.

      1 reply 0 retweets 0 likes
    3. Yehuda Katz  🥨‏Verified account @wycats Aug 21
      Replying to @samth @littlecalculist

      What Smalltalk feature is analogous? In particular I'm referring to a syntactic and ergonomic distinction between the kernel of an OO API from its intended usage (and in some cases, from the "interface to implement" and the intended API surface)

      1 reply 0 retweets 0 likes
    4. Sam Tobin-Hochstadt‏ @samth Aug 21
      Replying to @wycats @littlecalculist

      I think it was called namespaces in Smalltalk.

      1 reply 0 retweets 0 likes
    5. Yehuda Katz  🥨‏Verified account @wycats Aug 21
      Replying to @samth @littlecalculist

      Ah. Sometimes people use abstract to signal the "kernel" distinction in typed languages, but: 1. That creates a conflict between adding a default impl and retaining the signal 2. It doesn't communicate to readers of API users that the code is doing something "kernel"y

      2 replies 0 retweets 0 likes
    6. Yehuda Katz  🥨‏Verified account @wycats Aug 21
      Replying to @wycats @samth @littlecalculist

      I think it's possible to use namespaces for this purpose, but it doesn't fall out as easily the way it does with symbols.

      1 reply 0 retweets 0 likes
    7. Sam Tobin-Hochstadt‏ @samth Aug 21
      Replying to @wycats @littlecalculist

      RIght, I think symbols are a particularly nice way of doing this. I do wish we had done Dave's original `private x` syntax, though.

      1 reply 0 retweets 1 like
      Yehuda Katz  🥨‏Verified account @wycats Aug 21
      Replying to @samth @littlecalculist

      The thing that symbols buy you imo is a way to use the flexibility of lexical scope and good module systems along with OO concepts. The two compose very very nicely, and are (to me) notably missing in Ruby and Smalltalk. I'm hoping for (and trying to champion) private #x, btw

      1:15 PM - 21 Aug 2018
      • 1 Like
      • Sam Tobin-Hochstadt
      0 replies 0 retweets 1 like

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