4 ms·

INSTALLED_APPS = INSTALLED_APPS + (...) can be rewritten as: INSTALLED_APPS += (...) No?

• mixmastamyk 15y ago
  Yep. It could be argued that the first is more readable though.
  • alnayyir 15y ago
    For who? I don't think anybody who actually writes code is going to be confused by += No need to race to the bottom any faster guys.
    • mixmastamyk 15y ago
      Haters need to take a hard look in the mirror. I made a bland statement of common knowledge about readability. Never mentioned confusion. Edit: pussies.
      • llambda 15y ago
        I disagree: your statement does not in fact reflect conventions on common readability. If anything, a programmer should be able to read s = s + (...) just as well as s += (...). They both seem obvious to me but as a Python programmer, I prefer the latter.
        • mixmastamyk 15y ago
          Read it again, says "could be argued," not that I am in unrelenting agreement with it. I find both obvious as well. However, one of python's main design goals is readability. That's why it does not have the i++ operator in preference to i = i + 1, for example. No switch keyword either. +=, etc managed to squeeze in though. More specifically, one of the forms has a thousand years+ of algebra notation behind it, the other does not. I made no statement over whether pro programmers would find it confusing, but on the readability count, analogues to mathematics win.
          • alnayyir 15y ago
            Just make your point and stand by it, don't say it unless you mean it.
            • mixmastamyk 15y ago
              To be clear, it was a intended helpful comment with the point that the argument /exists/, an attempt to explain why one would do such a thing. Whether you or I support it or not is irrelevant. Unless you are arguing that the idea should not even be discussed, downvotes are malicious. The mere mention of an idea should not be attacked.
              • d0m 15y ago
                "Yep. It could be argued that the first is more readable though" -> I agree with you that this vote should not have been down-voted. I feel like the down-vote was more of a "I think what you said is wrong" rather then a "this comment was useless or misplaced". However, I feel like the following replies coming from you were unnecessary aggressive. In your first comment, after you saw that people didn't understand the meaning, I think it would have been better to edit it and explain - without being aggressive - what you intended by "more readable".
                • mixmastamyk 15y ago
                  Logically, yes. However I found multiple quick downvotes over a very benign statement rude and reacted in kind. People would like to think they don't matter, but it is the same as walking into a room and punching someone in the arm. If I had made some horrible statement it might make sense.
              • alnayyir 15y ago
                Communicate in way that will convey the meaning you desire to others. Everything else is self-indulgence and solipsism. It's your responsibility to make yourself understood, not ours.
  • d0m 15y ago
    Personally, I find: x += 2 Easier to read then: x = x + 2 For many reasons.. but mainly: 1) The first statement basically says: Add 2 to x, while the second says: Take x, add 2 and add that to x.. Which is one more step. 2) When a variable is repeated multiple time, I always read the line multiple time to make sure there is no error. For instance, in english "On the screen, there there is a xyz". I'll stop and read that sentence a couple of time to try to understand it.. and then realize it's an error. Likewise, when I see x = x + 2, I think "Is it a mistake?" I.e. did the author wanted to write: y = x + 2.. if not, why does he repeat himself? However, I'm interested in knowing in what you find it more readable :) ?
    • mixmastamyk 15y ago
      It's merely more familiar to the average person. I'm not against the first form and use it a lot. See my comment to llamda below for more details.
    • mixmastamyk 15y ago
      Looking a bit closer: 1) "Take x, add 2 and add that to x" the second add should be "set x to that". "Which is one more step." It is the same amount of steps, just a difference in how it is represented to the end user. 2) Hmm, never thought about that type of connection before. In my experience I had many years of "x = x + 1" in both Algebra class and when first exposed to Basic programing. I didn't encounter C (first exposure to extended operators) for at least another decade. Whenever I see such an assignment statement I visualize this in my head... x = x + 1 x = 5 + 1 x = --> 6 <-- (woosh) x <---6 (woosh) (6) (thud)
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