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  3. What are the worst programming habits?

What are the worst programming habits?

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  • P PIEBALDconsult

    Eddy Vluggen wrote:

    prefix with an underscore

    X| Yuck, filth, "littering code without adding ANY value whatsoever". X|

    You'll never get very far if all you do is follow instructions.

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #138

    PIEBALDconsult wrote:

    X| Yuck, filth, "littering code without adding ANY value whatsoever". X|

    :) There's also a link somewhere in these posts to an article from Joel Spolsky. There have been various ways of indicating that something is a member, as opposed to a local variable. How do YOU differentiate between the two?

    class X
    {
    private int i;
    public int I { get { return i; }
    public X(int someI)
    {
    this.i = someI;

    // further down the road
    int i = I;
    

    }
    }

    Looks better than prefixing the stuff, but there's hardly any hint that it is a private member or a local variable. It is obvious that I must be something public, either a field or a property. It'd also cause trouble with translating to VB. A simple workaround is using this to indicate the member;

    class X
    {
    private int i;
    public int I { get { return this.i; }
    public X(int someI)
    {
    this.i = someI;

    // further down the road
    int i = I;
    

    }
    }

    The prefix is merely there to indicate that it is a member that is being referenced. I'd be writing the same as below;;

    class X
    {
    int _i;
    public int I { get { return _i; }
    public X(int someI)
    {
    _i = someI;

    // further down the road
    int i = I;
    

    }
    }

    No confusion, and the minimal amount of symbols to convey all the information I want; everything private is recognizable by the underscore, everything public starts with a capital (similar as the recommendations) and everything local start with a non-capital. The value that it adds is that it makes the naming predictable and consistent, makes it easier to spot errors and read the code. It is something that I found that does not cost time, but saves me time.

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

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    • D Dave Kreskowiak

      I like to be explicit in my code. There is no doubt in my intent. I just find it a bit strange that "private" is the only exception to access modifiers where you have to be explicit about everything but only because it's default. I'm just saying that the access modifier shouldn't have a default forcing you to be explicit in your intent and (granted hopefully) think about what you're doing. I am happy to say, as the other replier pointed out, that I'm not one of those that needs to be "saved from himself" because VB made everything Public by default and that's what generates tons and tons of bad "public everything" code. I don't believe that the problem is with VB. I believe the problem is with the education and the lax standards of what should be taught in school. I've has more than few degreed grads that couldn't tell me the difference between public and private. I've also heard most of those same grads say they've never written an API, to which I call BULLSHIT since every application contains it's own API, usually for the sole consumer being the application itself. I think the entire "private as default" or whatever modifier is default is a Band-Aid on a bigger problem. EDIT: And just for the record, I'm going to admit to being a hypocrite. I also rely on private being the default in my own code but, just because I do it, that in no way means I think it's a good idea.

      A guide to posting questions on CodeProject

      How to debug small programs
      Dave Kreskowiak

      L Offline
      L Offline
      Lost User
      wrote on last edited by
      #139

      Dave Kreskowiak wrote:

      I think the entire "private as default" or whatever modifier is default is a Band-Aid on a bigger problem.

      With the argumentation that one needs to save the developer from himself. I'm sorry, but that only flies if you don't have any using-clause in your files. Be explicit in the class that you use, or accept the default behaviour.

      Dave Kreskowiak wrote:

      I don't believe that the problem is with VB. I

      Not? You just explained why it is :)

      Dave Kreskowiak wrote:

      I've has more than few degreed grads that couldn't tell me the difference between public and private. I've also heard most of those same grads say they've never written an API, to which I call bullsh*t since every application contains it's own API, usually for the sole consumer being the application itself.

      Knowing the difference between the access-modifiers would be kinda basic knowledge. And no, unless it is intended to be consumed by the public, it is not a public API. If there's no SDK to download, then you're not building a framework.

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

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      • C Chris Maunder

        I was thinking about the things that bug me and came up with a short list

        1. No comments. I know - let's have a religious war etc, but I find no comments dangerous.
        2. using o as a variable name. In fact using anything that's not sensible. ctx, dr_rfp_ptr, i2
        3. Bad formatting. It's like walking into a house and being unable to sit down because of empty pizza boxes on the couch
        4. Mystery side-effects in code.
        5. Magic numbers

        I'm guilty of 2 of these on occasion. What's your list?

        cheers Chris Maunder

        J Offline
        J Offline
        jschell
        wrote on last edited by
        #140

        Chris Maunder wrote:

        What's your list?

        1. Building something because the developer wants it rather than because a customer wants it. 2. Assuming that because something is new that it better. 3. Assuming that because something is new is it without fault and requires no time learn to use well.

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        • C Chris Maunder

          I was thinking about the things that bug me and came up with a short list

          1. No comments. I know - let's have a religious war etc, but I find no comments dangerous.
          2. using o as a variable name. In fact using anything that's not sensible. ctx, dr_rfp_ptr, i2
          3. Bad formatting. It's like walking into a house and being unable to sit down because of empty pizza boxes on the couch
          4. Mystery side-effects in code.
          5. Magic numbers

          I'm guilty of 2 of these on occasion. What's your list?

          cheers Chris Maunder

          R Offline
          R Offline
          RafagaX
          wrote on last edited by
          #141

          I think i'm guilty of the first one, although I usually only comment when it's not clear what the code does or it may have some unintended side effects.

          CEO at: - Rafaga Systems - Para Facturas - Modern Components for the moment...

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          • C Chris Maunder

            I was thinking about the things that bug me and came up with a short list

            1. No comments. I know - let's have a religious war etc, but I find no comments dangerous.
            2. using o as a variable name. In fact using anything that's not sensible. ctx, dr_rfp_ptr, i2
            3. Bad formatting. It's like walking into a house and being unable to sit down because of empty pizza boxes on the couch
            4. Mystery side-effects in code.
            5. Magic numbers

            I'm guilty of 2 of these on occasion. What's your list?

            cheers Chris Maunder

            R Offline
            R Offline
            R Erasmus
            wrote on last edited by
            #142

            Using too many if-statements where better suitable mechanism could be used instead.

            "Program testing can be used to show the presence of bugs, but never to show their absence." << please vote!! >>

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            • P PIEBALDconsult

              In order of how I have them listed below: 0) Use of VB. 1) Use of Convert and/or ToString rather than casting and/or Parsing. 2) Over-use of Reflection. Not caching and reusing information retrieved via Reflection. 3) Over-reliance on tools, especially third-party tools. 4) Monolithic classes, lack of modularity, non-single-responsibility. 5) Singletons. X| 6) Convoluted concatenation -- a String.Format will be clearer. 6.1) Concatenated SQL statements, when a parameterized statement is better on so many levels. 7) Not leveraging interfaces. 8) Not allowing polymorphism for no apparent reason. 9) Swallowing Exceptions. 10) Posting snippets of code that use uncommon, custon, or third-party classes and expecting everyone to know what they are.

              You'll never get very far if all you do is follow instructions.

              C Offline
              C Offline
              CHill60
              wrote on last edited by
              #143

              Quote:

              1. Swallowing Exceptions

              My number 1 pet hate. Should be in capitals. //BUT THAT IS SOMETHING ELSE THAT'S ANNOYING IN COMMENTS Plz 4giv me shtng :-D

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              • C Chris Maunder

                I was thinking about the things that bug me and came up with a short list

                1. No comments. I know - let's have a religious war etc, but I find no comments dangerous.
                2. using o as a variable name. In fact using anything that's not sensible. ctx, dr_rfp_ptr, i2
                3. Bad formatting. It's like walking into a house and being unable to sit down because of empty pizza boxes on the couch
                4. Mystery side-effects in code.
                5. Magic numbers

                I'm guilty of 2 of these on occasion. What's your list?

                cheers Chris Maunder

                M Offline
                M Offline
                moonwalker72067
                wrote on last edited by
                #144

                ctx - it is assumed that it should point to some context structure, it is(should; may) not variable in usual sense but rather - the function parameter so it may be "pure functional".

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                • C Chris Maunder

                  I was thinking about the things that bug me and came up with a short list

                  1. No comments. I know - let's have a religious war etc, but I find no comments dangerous.
                  2. using o as a variable name. In fact using anything that's not sensible. ctx, dr_rfp_ptr, i2
                  3. Bad formatting. It's like walking into a house and being unable to sit down because of empty pizza boxes on the couch
                  4. Mystery side-effects in code.
                  5. Magic numbers

                  I'm guilty of 2 of these on occasion. What's your list?

                  cheers Chris Maunder

                  N Offline
                  N Offline
                  Naoya Yamaguchi
                  wrote on last edited by
                  #145

                  I have nothing to say against use of comments. They may not be necessary for some, but usually do no harm to anyone. I believe programmers are free to choose any name for a variable so long as they communicate well to people you work with. Using "o" is fine. If it's a problem, change your font. Bad formatting used to a bad practice, but nowadays, we have apps and services to make them neat.

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                  • J Jorgen Andersson

                    How about the SingleOrDefault on the same machine?

                    Wrong is evil and must be defeated. - Jeff Ello[^]

                    L Offline
                    L Offline
                    Lost User
                    wrote on last edited by
                    #146

                    I'm not sure what you mean - the timings were all on the same machine.

                    PooperPig - Coming Soon

                    J 1 Reply Last reply
                    0
                    • L Lost User

                      I'm not sure what you mean - the timings were all on the same machine.

                      PooperPig - Coming Soon

                      J Offline
                      J Offline
                      Jorgen Andersson
                      wrote on last edited by
                      #147

                      I was just curious on the performance of SingleOrDefault vs FirstOrDefault as per Petes suggestion.

                      Wrong is evil and must be defeated. - Jeff Ello[^]

                      L 1 Reply Last reply
                      0
                      • J Jorgen Andersson

                        I was just curious on the performance of SingleOrDefault vs FirstOrDefault as per Petes suggestion.

                        Wrong is evil and must be defeated. - Jeff Ello[^]

                        L Offline
                        L Offline
                        Lost User
                        wrote on last edited by
                        #148

                        Oh - I see. I didn't do that - the figures were from a test I did some time ago when someone kept going through our code base changing all the .where(predicate).something() to .something(predicate) because they said it was more efficient - which I didn't think was the case.

                        PooperPig - Coming Soon

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                        • Richard Andrew x64R Richard Andrew x64

                          6. Leaving commented-out code hanging around too long I'm guilty of that one quite often.

                          The difficult we do right away... ...the impossible takes slightly longer.

                          G Offline
                          G Offline
                          GSN CP
                          wrote on last edited by
                          #149

                          same goes for me!

                          .:>GSN<:.

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                          0
                          • C Chris Maunder

                            I was thinking about the things that bug me and came up with a short list

                            1. No comments. I know - let's have a religious war etc, but I find no comments dangerous.
                            2. using o as a variable name. In fact using anything that's not sensible. ctx, dr_rfp_ptr, i2
                            3. Bad formatting. It's like walking into a house and being unable to sit down because of empty pizza boxes on the couch
                            4. Mystery side-effects in code.
                            5. Magic numbers

                            I'm guilty of 2 of these on occasion. What's your list?

                            cheers Chris Maunder

                            R Offline
                            R Offline
                            Ravi Bhavnani
                            wrote on last edited by
                            #150

                            Thanks for this week's survey - it's great! :thumbsup: /ravi

                            My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

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                            • Richard Andrew x64R Richard Andrew x64

                              6. Leaving commented-out code hanging around too long I'm guilty of that one quite often.

                              The difficult we do right away... ...the impossible takes slightly longer.

                              L Offline
                              L Offline
                              Luiz Monad
                              wrote on last edited by
                              #151

                              Too long? I want to kill you if you don't delete old code. That's why we have (I have, but it's hard to convince people to use) version control. There should be 0 old code commented. One time I just deleted all comments that where not proper "human" language, except for code examples, because they're the only exception to having code in comments.

                              Richard Andrew x64R 1 Reply Last reply
                              0
                              • L Luiz Monad

                                Too long? I want to kill you if you don't delete old code. That's why we have (I have, but it's hard to convince people to use) version control. There should be 0 old code commented. One time I just deleted all comments that where not proper "human" language, except for code examples, because they're the only exception to having code in comments.

                                Richard Andrew x64R Offline
                                Richard Andrew x64R Offline
                                Richard Andrew x64
                                wrote on last edited by
                                #152

                                Luiz Felipe Stangarlin wrote:

                                I want to kill you if you don't delete old code.

                                Maybe you should cut down on the caffeine? ;P

                                The difficult we do right away... ...the impossible takes slightly longer.

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