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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 12 Feb 2019

      Jon Pretty Retweeted Tpol Chico

      This is a great example of why comments should be used sparingly. Comments are not necessarily truthful. Comments are not checked by the compiler. Comments are not even tested. Nothing breaks when you don't maintain comments. Code without comments has none of these problems.https://twitter.com/tpolecat/status/1095469227903832064 …

      Jon Pretty added,

      Tpol Chico @tpolecat
      #codecomments pic.twitter.com/tm0feFixTL
      24 replies 57 retweets 178 likes
    2. This Tweet is unavailable.
    3. Ciaran McGhie  🏴󠁧󠁢󠁳󠁣󠁴󠁿‏ @ciaran128 12 Feb 2019
      Replying to @typesthings @propensive @jedws

      Because those weren’t the points raised in the text of the tweet. Yes, the comments in the image are totally pointless. That doesn’t invalidate commenting as a practice, which is what the tweet seems to suggest. That’s why the replies go there.

      1 reply 0 retweets 0 likes
    4. Jed Wesley-Smith‏ @jedws 13 Feb 2019
      Replying to @ciaran128 @typesthings @propensive

      the point is that comments have a halflife much lower than the code. Those examples merely illustrate that, but in general you need to think long and hard why a comment cannot be expressed in the code itsrlf

      2 replies 0 retweets 2 likes
    5. Ciaran McGhie  🏴󠁧󠁢󠁳󠁣󠁴󠁿‏ @ciaran128 13 Feb 2019
      Replying to @jedws @typesthings @propensive

      Comments should (IMO) get at the why of something, not the what. They can help provide context for the next person reading the code. All documentation requires maintenance, but that doesn’t remove its value.

      1 reply 0 retweets 2 likes
    6. Jed Wesley-Smith‏ @jedws 13 Feb 2019
      Replying to @ciaran128 @typesthings @propensive

      right, good comments add value to the code and don’t duplicate what the code already expresses. Good code expresses a lot to the reader, without requiring additional explanation. Where it gets tricky is where particular readers are not conversant in the code’s jargon

      1 reply 0 retweets 2 likes
    7. This Tweet is unavailable.
    8. Dale Wijnand‏ @dwijnand 13 Feb 2019
      Replying to @typesthings @jedws and

      One option is to put such detail in the associated commit message, where it's more obviously only true at the time of writing. Also not perfect, but perhaps better than stale, in-file comments.

      1 reply 0 retweets 2 likes
      Jon Pretty‏ @propensive 13 Feb 2019
      Replying to @dwijnand @typesthings and

      I quite like that approach... for teams who are more adept at Git than me. :) (But that's a motivator to get better, itself!)

      1:37 AM - 13 Feb 2019
      0 replies 0 retweets 0 likes
        1. This Tweet is unavailable.
        2. Dale Wijnand‏ @dwijnand 13 Feb 2019
          Replying to @typesthings @propensive and

          Yeah, the buried part is the imperfect part. But I'm arguing that implementation comments that aren't worth having in the code but are worth not losing completely can live in this little extra space, the commit message.

          0 replies 0 retweets 1 like
        3. End of conversation

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