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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. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
      Replying to @wycats

      @wycats hrm, no, that's not my claim and that's not what's in the book.

      1 reply 0 retweets 0 likes
    2. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
      Replying to @bitemyapp

      @wycats but I would prefer that people not muddle up the topic with weird statements like it being about non-local effects.

      1 reply 0 retweets 0 likes
    3. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
      Replying to @bitemyapp

      @bitemyapp monads allow you to run some computation sure that (certain) non-local effects are encapsulated. Is that wrong?

      1 reply 0 retweets 0 likes
    4. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
      Replying to @wycats

      @wycats it's wrong, yes.

      2 replies 0 retweets 0 likes
    5. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
      Replying to @bitemyapp

      @bitemyapp it's wrong because it's not *all* monads can do, or because it's not what monads sometimes do?

      1 reply 0 retweets 0 likes
    6. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
      Replying to @wycats

      @wycats it's wrong because it doesn't describe what Monad is or does.

      2 replies 0 retweets 0 likes
    7. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
      Replying to @bitemyapp

      @bitemyapp but does it describe what Monad is often useful for?

      1 reply 0 retweets 0 likes
    8. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
      Replying to @wycats

      @wycats Not often, only a couple instances popular in languages that rarely pull it off convincingly.

      1 reply 0 retweets 0 likes
    9. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
      Replying to @bitemyapp

      @wycats and even then, it's a pretty bad explanation of, say, Maybe.

      2 replies 0 retweets 0 likes
    10. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
      Replying to @bitemyapp

      @wycats Maybe itself deals with the concept of Nothingness, Monad is just a convenient interface over the data structure.

      1 reply 0 retweets 0 likes
      Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
      Replying to @bitemyapp

      @bitemyapp It's a possibly-nothing that is part of the type interface of your functions, instead of an implicit global protocol.

      9:59 PM - 23 Oct 2015
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
          Replying to @wycats

          @wycats hum, the possibly nothing bit is in the datatype, not the interface. data Maybe a = Nothing | Just a

          2 replies 0 retweets 0 likes
        3. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
          Replying to @bitemyapp

          @wycats and I doubt you mean the church-encoding, so...

          1 reply 0 retweets 0 likes
        4. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
          Replying to @bitemyapp

          @bitemyapp null is a global protocol. Maybe is local.

          1 reply 0 retweets 0 likes
        5. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
          Replying to @wycats

          @wycats null is a un-value'ish value, Maybe is a data structure that bears values or possibly nothing at all.

          1 reply 0 retweets 0 likes
        6. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
          Replying to @bitemyapp

          @bitemyapp in languages with null, all values can be "null", which makes null a global protocol. In langs with Maybe, it's a local question

          1 reply 0 retweets 0 likes
        7. Chris Allen ΧΡ ( 👻, SC, LP &  🏴)‏ @bitemyapp 23 Oct 2015
          Replying to @wycats

          @wycats (still nothing to do with Monad tho)

          1 reply 0 retweets 0 likes
        8. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
          Replying to @bitemyapp

          @bitemyapp Monad lets you take questions like that and eliminate them for the purpose of computation.

          2 replies 0 retweets 0 likes
        9. Yehuda Katz  🥨‏Verified account @wycats 23 Oct 2015
          Replying to @wycats

          @bitemyapp Including very generic computation.

          0 replies 0 retweets 0 likes
        10. End of conversation

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