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Pet Peeve

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  • R ronchristie

    I both agree and disagree. My personal coding style is:

    if (expr) {
    doSomething();
    }
    else {
    doAnotherThing();
    }

    I like using the braces so that adding an extra bit of logic to the execution block won't inadvertently change the program flow, and at the same time placing the opening brace on the same line as the if... and the else statements compacts the code a bit. To me the advantage with compact code is that you can see more of the program logic in a single screen which means less time scrolling up and down trying to follow the program logic. For that reason, I'm ruthless in eliminating blank line whitespace except to visually offset functions or methods.

    Ron Christie

    J Offline
    J Offline
    Jeremy Falcon
    wrote on last edited by
    #93

    As much as I'm not a fan of that (even in JavaScript), that makes more sense than:

    if (expr)
    {
    doSomethingForOneLine();
    }
    else
    {
    doAnotherThingForOneLine();
    }

    You're version is at least concise, and no matter what some may say on CP, concise is important. Less is more. Always will be.

    Jeremy Falcon

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    0
    • S StatementTerminator

      PIEBALDconsult wrote:

      Quite. The maturity of a programming language may (in part) be calculated by how many newlines are required. A proper language requires none.

      Just for making that statement, you should be forced to a maintain decade-old Perl CGI system.

      P Offline
      P Offline
      PIEBALDconsult
      wrote on last edited by
      #94

      Perl is a scripting language; not a programming language.

      S 1 Reply Last reply
      0
      • P Paulo Zemek

        I, for example, would never write the code like that. I can write an if without the {}, but I always put an extra line break after the call. And seeing two lines after the if simply looks wrong.

        if ((err = SSLHashSHA1.update(&hashCtx, &serverRandom)) != 0)
        goto fail;

        if ((err = SSLHashSHA1.update(&hashCtx, &signedParams)) != 0)
        goto fail;
        goto fail; // why the hell there's a line of code here? It is not important what it does, it looks wrong.

        if ((err = SSLHashSHA1.final(&hashCtx, &hashOut)) != 0)
        goto fail;

        So, this kind of error is as ugly to me as this (in fact, even uglier as the excessive {} somewhat hide the problem):

        if ((err = SSLHashSHA1.update(&hashCtx, &serverRandom)) != 0)
        {
        goto fail;
        }

        if ((err = SSLHashSHA1.update(&hashCtx, &signedParams)) != 0)
        {
        goto fail;
        }
        goto fail; // Doesn't this look wrong?

        if ((err = SSLHashSHA1.final(&hashCtx, &hashOut)) != 0)
        {
        goto fail;
        }

        But developers can also commit these errors (and by simply taking a looks without reading the code, I don't spot anything wrong):

        if ((err = SSLHashSHA1.update(&hashCtx, &serverRandom)) != 0)
        {
        goto fail;
        }

        if ((err = SSLHashSHA1.update(&hashCtx, &signedParams)) != 0)
        {
        goto fail;
        } // Oh, it looks like an else is missing...
        {
        goto fail;
        }

        if ((err = SSLHashSHA1.final(&hashCtx, &hashOut)) != 0)
        {
        goto fail;
        }

        // So the code gets corrected to...
        if ((err = SSLHashSHA1.update(&hashCtx, &serverRandom)) != 0)
        {
        goto fail;
        }

        if ((err = SSLHashSHA1.update(&hashCtx, &signedParams)) != 0)
        {
        goto fail;
        }
        else
        {
        goto fail;
        }

        if ((err = SSLHashSHA1.final(&hashCtx, &hashOut)) != 0)
        {
        goto fail;
        }

        O Offline
        O Offline
        Oleg A Lukin
        wrote on last edited by
        #95

        Well, I won't write anything such as that either. But since this a real world example of infamous 'goto fail' bug obviously other people do. In general I'd say that none of your samples with braces would've passed my code review, but I admit your first sample should attract review attention as well, it'll probably will attract enough attention from any reviewer. Still I'd say that with braces style the code like that most probably would not leave the developer and will be fixed before review

        Banking establishments are more dangerous than standing armies. T.Jefferson

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        0
        • P PIEBALDconsult

          Perl is a scripting language; not a programming language.

          S Offline
          S Offline
          StatementTerminator
          wrote on last edited by
          #96

          Yeah true, you really need to be pedantic about a joke?

          P 1 Reply Last reply
          0
          • L Lost User

            Do you really require 8 lines to convey 4 lines worth of information? Perhaps "begin" and "end" would be even more clear? How about "then"? :)

            if (condition) then
            begin
            DoThis();
            end
            else
            begin
            DoThat();
            end;

            Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^]

            S Offline
            S Offline
            StatementTerminator
            wrote on last edited by
            #97

            LOL, that looks exactly like T-SQL :)

            1 Reply Last reply
            0
            • S StatementTerminator

              Yeah true, you really need to be pedantic about a joke?

              P Offline
              P Offline
              PIEBALDconsult
              wrote on last edited by
              #98

              No, but I really need to be demeaning of Perl. X|

              1 Reply Last reply
              0
              • R ronchristie

                I both agree and disagree. My personal coding style is:

                if (expr) {
                doSomething();
                }
                else {
                doAnotherThing();
                }

                I like using the braces so that adding an extra bit of logic to the execution block won't inadvertently change the program flow, and at the same time placing the opening brace on the same line as the if... and the else statements compacts the code a bit. To me the advantage with compact code is that you can see more of the program logic in a single screen which means less time scrolling up and down trying to follow the program logic. For that reason, I'm ruthless in eliminating blank line whitespace except to visually offset functions or methods.

                Ron Christie

                R Offline
                R Offline
                rjmoses
                wrote on last edited by
                #99

                I personally prefer this convention: if ((a cond b) conjunction (c cond d) conjunction // Additional conditions always on separate line (e cond f)) { // Always include opening brace do .... something } // Always closing brace Or } else { // Always closing brace..else..opening brace do .... something else } // Always closing brace The same conventions and principles apply to loops (for, while, etc.) and other conditionals. I strictly avoid NOT using braces under any circumstances. I want to be able to see a complete thought, i.e., a block of code, in one intact, obvious section. These are my thoughts based on years of chasing bugs, modifying other people's code, and having to debug somebody else's problem. Other people are welcome to use their own conventions, but I may not be able to help them efficiently. Just because I can do something doesn't mean I should do it.

                R 1 Reply Last reply
                0
                • R R Giskard Reventlov

                  Why are people so lazy? For example, how hard is it to

                  if (condition)
                  {
                  DoThis();
                  }
                  else
                  {
                  DoThat();
                  }

                  as opposed to:

                  if (condition)
                  DoThis();
                  else
                  DoThat();

                  Pedants :sigh:

                  J Offline
                  J Offline
                  jschell
                  wrote on last edited by
                  #100

                  Karel Čapek wrote:

                  For example, how hard is it to

                  Both are probably less hard than complaining about it. But other than that since it is legitimate syntax then it is legitimate syntax and nothing but a preference after that. Naturally if that is the most important problem facing you day to day or even one that even rises above the noise level in terms of problems you must work at an exceeding stellar place. I once worked a a place where the VP (most senior person in the entire site) would regularly take down the database through incorrect usage which would shut down the call center (several hundred employees) completely. Now that is a problem.

                  1 Reply Last reply
                  0
                  • R rjmoses

                    I personally prefer this convention: if ((a cond b) conjunction (c cond d) conjunction // Additional conditions always on separate line (e cond f)) { // Always include opening brace do .... something } // Always closing brace Or } else { // Always closing brace..else..opening brace do .... something else } // Always closing brace The same conventions and principles apply to loops (for, while, etc.) and other conditionals. I strictly avoid NOT using braces under any circumstances. I want to be able to see a complete thought, i.e., a block of code, in one intact, obvious section. These are my thoughts based on years of chasing bugs, modifying other people's code, and having to debug somebody else's problem. Other people are welcome to use their own conventions, but I may not be able to help them efficiently. Just because I can do something doesn't mean I should do it.

                    R Offline
                    R Offline
                    ronchristie
                    wrote on last edited by
                    #101

                    It's interesting that the older the programmer the more concision becomes important. :)

                    Ron Christie

                    1 Reply Last reply
                    0
                    • R R Giskard Reventlov

                      Why are people so lazy? For example, how hard is it to

                      if (condition)
                      {
                      DoThis();
                      }
                      else
                      {
                      DoThat();
                      }

                      as opposed to:

                      if (condition)
                      DoThis();
                      else
                      DoThat();

                      Pedants :sigh:

                      A Offline
                      A Offline
                      Al Chak
                      wrote on last edited by
                      #102

                      I have more

                      (condition)?DoThis():DoThat();

                      DoThese[(condition)]();

                      #define CALL_FUNC(__F) Do##__F
                      CALL_FUNC(condition);

                      do
                      {
                      if(condition)
                      {
                      DoThis();
                      break;
                      }
                      } while(DoThat()&&condition);

                      <pre lang="cs">
                      switch(condition)
                      {
                      case 1:
                      DoThis();
                      break;
                      default:
                      DoThat();
                      }

                      :laugh:

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