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  4. Aaaarg....use the namespace

Aaaarg....use the namespace

Scheduled Pinned Locked Moved The Weird and The Wonderful
csharpc++javaphp
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  • N Nagy Vilmos

    No, you prefix the member if a class with this to prevent any ambiguity. The method or property on it's own only implies where it is. If I have this code:

    class Thingy {
    private int majig = 27;

    void summit() {
        if (majig > 42) {
          // clever code
        }
    }
    

    }

    And I copy the test to another method, all bad things could happen:

    void nuThang() {
        // lots of code
        int majig = 69;
    
        // lots more code
        // copied:
        if (majig > 42) {
          // clever code
        }
    }
    

    oops.


    Panic, Chaos, Destruction. My work here is done. Drink. Get drunk. Fall over - P O'H OK, I will win to day or my name isn't Ethel Crudacre! - DD Ethel Crudacre I cannot live by bread alone. Bacon and ketchup are needed as well. - Trollslayer Have a bit more patience with newbies. Of course some of them act dumb - they're often *students*, for heaven's sake - Terry Pratchett

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #21

    Copy/paste is often an invitation not to check what you just pasted. Your example might be a nice example on why we introduced the DRY principle, but being this abstract, one can't be sure. But no, I'd not be bloating my code for the sake of "easy copies". If it's that re-usable, I'll take the time to make it a snippet. --edit;

    Nagy Vilmos wrote:

    No, you prefix the member if a class with this to prevent any ambiguity

    ..the same kind of ambiguity that you have if you don't use the full name against a type, including it's namespace. Do you have global variables that clash with the names of the property/method that you're calling from the current object that you need to specify explicitly that you need the property/method from "this" object?

    Bastard Programmer from Hell :suss:

    1 Reply Last reply
    0
    • N Nagy Vilmos

      No, you prefix the member if a class with this to prevent any ambiguity. The method or property on it's own only implies where it is. If I have this code:

      class Thingy {
      private int majig = 27;

      void summit() {
          if (majig > 42) {
            // clever code
          }
      }
      

      }

      And I copy the test to another method, all bad things could happen:

      void nuThang() {
          // lots of code
          int majig = 69;
      
          // lots more code
          // copied:
          if (majig > 42) {
            // clever code
          }
      }
      

      oops.


      Panic, Chaos, Destruction. My work here is done. Drink. Get drunk. Fall over - P O'H OK, I will win to day or my name isn't Ethel Crudacre! - DD Ethel Crudacre I cannot live by bread alone. Bacon and ketchup are needed as well. - Trollslayer Have a bit more patience with newbies. Of course some of them act dumb - they're often *students*, for heaven's sake - Terry Pratchett

      P Offline
      P Offline
      PIEBALDconsult
      wrote on last edited by
      #22

      Nagy Vilmos wrote:

      you prefix the member if a class with this to prevent any ambiguity

      Correct.

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      0
      • S Sentenryu

        I don't see the shame on this, this guy just like to write long names :|

        I'm brazilian and english (well, human languages in general) aren't my best skill, so, sorry by my english. (if you want we can speak in C# or VB.Net =p)

        T Offline
        T Offline
        thatraja
        wrote on last edited by
        #23

        Sentenryu wrote:

        I don't see the shame on this, this guy just like to write long names :|

        :doh: Huh? I don't, read my message again. I don't want the repetitions so I just mentioned the namespace at the top & replaced things.

        thatraja

        FREE Code Conversion VB6 ASP VB.NET C# ASP.NET C++ JAVA PHP DELPHI ColdFusion
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        Nobody remains a virgin, Life screws everyone :sigh:

        S 1 Reply Last reply
        0
        • P PIEBALDconsult

          I disagree, it's just code, the compiler doesn't care* and it's better to give the next developer too much information rather than too little. But could they have all shared one static instance? How often are these methods called? Are there threading issues? How big do the StringBuilders become? Can you estimate how big? If large, then pre-allocating enough memory or re-using existing instances can eliminate a lot of needless re-allocation. * However, I suspect that when you use the using directive** the compiler must have to spend some additional time looking them up. ** Qualification added for clarification.

          T Offline
          T Offline
          thatraja
          wrote on last edited by
          #24

          There I mentioned StringBuilder is just an example. I found many similar things like below.

          System.Diagnostics.Trace.Write
          System.Diagnostics.Trace.WriteLine
          System.Drawing.Color
          System.Configuration.Configuration
          System.IO.StreamWriter
          System.IO.StreamReader
          System.IO.FileInfo
          System.IO.FileStream
          System.IO.StringReader
          System.IO.StringWriter
          System.IO.TextReader
          System.IO.TextWriter
          System.Xml.XmlDocument
          etc.,
          ....
          ...
          ..
          .

          Why so much repetitions? After that some more 100s of replacements done. Namespace at top.

          thatraja

          FREE Code Conversion VB6 ASP VB.NET C# ASP.NET C++ JAVA PHP DELPHI ColdFusion
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          Nobody remains a virgin, Life screws everyone :sigh:

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          • T thatraja

            Sentenryu wrote:

            I don't see the shame on this, this guy just like to write long names :|

            :doh: Huh? I don't, read my message again. I don't want the repetitions so I just mentioned the namespace at the top & replaced things.

            thatraja

            FREE Code Conversion VB6 ASP VB.NET C# ASP.NET C++ JAVA PHP DELPHI ColdFusion
            HTML Marquee & its alternatives

            Nobody remains a virgin, Life screws everyone :sigh:

            S Offline
            S Offline
            Sentenryu
            wrote on last edited by
            #25

            I was talking about the original programmer, is that you?

            I'm brazilian and english (well, human languages in general) aren't my best skill, so, sorry by my english. (if you want we can speak in C# or VB.Net =p)

            T 1 Reply Last reply
            0
            • L Lost User

              Sentenryu wrote:

              But it's a matter of taste.

              No, it's not. Bloating code is an offence. Three offences, you're out.

              Bastard Programmer from Hell :suss:

              B Offline
              B Offline
              BillW33
              wrote on last edited by
              #26

              But, some folk like to bloat their code. ;) ;) I agree, there is no good reason to do this, but it is not as bad as wacky, buggy code.

              Just because the code works, it doesn't mean that it is good code.

              L 1 Reply Last reply
              0
              • B BillW33

                But, some folk like to bloat their code. ;) ;) I agree, there is no good reason to do this, but it is not as bad as wacky, buggy code.

                Just because the code works, it doesn't mean that it is good code.

                L Offline
                L Offline
                Lost User
                wrote on last edited by
                #27

                CIDev wrote:

                I agree, there is no good reason to do this, but it is not as bad as wacky, buggy code.

                To quote one of the arguments why it is;

                CIDev wrote:

                Just because the code works, it doesn't mean that it is good code.

                And that's easy to explain; the more symbols you need to convey an idea, the more chances that there's an error in the communication. The more symbols, the more fluff, the more bugs.

                Bastard Programmer from Hell :suss:

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                • T thatraja

                  I found 100+ StringBuilders in a module(see below).

                  function string function1()
                  {
                  System.Text.StringBuilder sb1 = new System.Text.StringBuilder();
                  ....
                  ...
                  }
                  function void method1()
                  {
                  System.Text.StringBuilder sb2 = new System.Text.StringBuilder();
                  ....
                  ...
                  }
                  function string function3()
                  {
                  System.Text.StringBuilder sb3 = new System.Text.StringBuilder();
                  ....
                  ...
                  }
                  ....
                  ...

                  X| Then I have Included the namespace at top of the module.

                  using System.Text;

                  And replaced System.Text.StringBuilder with StringBuilder

                  thatraja

                  FREE Code Conversion VB6 ASP VB.NET C# ASP.NET C++ JAVA PHP DELPHI ColdFusion
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                  Nobody remains a virgin, Life screws everyone :sigh:

                  Sander RosselS Offline
                  Sander RosselS Offline
                  Sander Rossel
                  wrote on last edited by
                  #28

                  Not that it's a good excuse, but it makes copy/pasting the code easier :) If you'd import the System.Text Namespace and copy/pasted the entire thing to another file you'd get an error for every StringBuilder. StringBuilder is a common class that should be known to all programmers, but for some of the more 'obscure' classes I prefer to use the entire namespace. Something like: SomeCompany.ThirdPartyTool.Library.PartINeed.SubPart.TheActualClass. At least now everyone who reads the code knows where this TheActualClass comes from, even if they didn't know the third party component. What I find even more annoying than having System.Text.StringBuilder 100+ times in your code is having lots of imports/using statements at the top of every code file. Especially when half of them aren't used. In C# you can right-click and remove unused imports. VB (unfortunately) doesn't have this option (and please save me the C# vs. VB discussion). I wouldn't call this a code horror, but in this case an import of System.Text does seem logical. The real horror might be that you use 100+ StringBuilders instead of re-use one... But I'll leave that to you :)

                  It's an OO world.

                  public class Naerling : Lazy<Person>{
                  public void DoWork(){ throw new NotImplementedException(); }
                  }

                  E 1 Reply Last reply
                  0
                  • S Sentenryu

                    I was talking about the original programmer, is that you?

                    I'm brazilian and english (well, human languages in general) aren't my best skill, so, sorry by my english. (if you want we can speak in C# or VB.Net =p)

                    T Offline
                    T Offline
                    thatraja
                    wrote on last edited by
                    #29

                    Sentenryu wrote:

                    I was talking about the original programmer, is that you?

                    No

                    thatraja

                    FREE Code Conversion VB6 ASP VB.NET C# ASP.NET C++ JAVA PHP DELPHI ColdFusion
                    HTML Marquee & its alternatives

                    Nobody remains a virgin, Life screws everyone :sigh:

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                    • Sander RosselS Sander Rossel

                      Not that it's a good excuse, but it makes copy/pasting the code easier :) If you'd import the System.Text Namespace and copy/pasted the entire thing to another file you'd get an error for every StringBuilder. StringBuilder is a common class that should be known to all programmers, but for some of the more 'obscure' classes I prefer to use the entire namespace. Something like: SomeCompany.ThirdPartyTool.Library.PartINeed.SubPart.TheActualClass. At least now everyone who reads the code knows where this TheActualClass comes from, even if they didn't know the third party component. What I find even more annoying than having System.Text.StringBuilder 100+ times in your code is having lots of imports/using statements at the top of every code file. Especially when half of them aren't used. In C# you can right-click and remove unused imports. VB (unfortunately) doesn't have this option (and please save me the C# vs. VB discussion). I wouldn't call this a code horror, but in this case an import of System.Text does seem logical. The real horror might be that you use 100+ StringBuilders instead of re-use one... But I'll leave that to you :)

                      It's an OO world.

                      public class Naerling : Lazy<Person>{
                      public void DoWork(){ throw new NotImplementedException(); }
                      }

                      E Offline
                      E Offline
                      Edward Giles
                      wrote on last edited by
                      #30

                      "VB (unfortunately) doesn't have this option (and please save me the C# vs. VB discussion)." It does have that option, at least in the version I've used (VB2010)

                      Sander RosselS 1 Reply Last reply
                      0
                      • E Edward Giles

                        "VB (unfortunately) doesn't have this option (and please save me the C# vs. VB discussion)." It does have that option, at least in the version I've used (VB2010)

                        Sander RosselS Offline
                        Sander RosselS Offline
                        Sander Rossel
                        wrote on last edited by
                        #31

                        Really? I was never able to find it. Just right click and...?

                        It's an OO world.

                        public class Naerling : Lazy<Person>{
                        public void DoWork(){ throw new NotImplementedException(); }
                        }

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