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var abuse

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  • P Peter Mulholland

    Coming from a C++ background, I feel it doesn't improve the readability of the code, particularly when used to accept a return value from a method. In my experience, those that like it overuse and abuse it. It was a mistake to add it to the C# language.

    Pete

    N Offline
    N Offline
    Nish Nishant
    wrote on last edited by
    #29

    Peter Mulholland wrote:

    It was a mistake to add it to the C# language.

    C++ has it too now, it's called auto.

    auto x = SomeFunc();

    Regards, Nish


    Are you addicted to CP? If so, check this out: The Code Project Forum Analyzer : Find out how much of a life you don't have! My technology blog: voidnish.wordpress.com

    P 1 Reply Last reply
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    • R RugbyLeague

      Why? What is the point of repeating information?

      N Offline
      N Offline
      Nish Nishant
      wrote on last edited by
      #30

      Many people don't know what C#'s var means. They incorrectly think it's not type-safe! :-)

      Regards, Nish


      Are you addicted to CP? If so, check this out: The Code Project Forum Analyzer : Find out how much of a life you don't have! My technology blog: voidnish.wordpress.com

      P 1 Reply Last reply
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      • L leppie

        Well put. Exactly why I do NOT use handholding tools like Reshaper. Clearly their definition of 'problems' is very subjective, and personally does not suite me. I write the code exactly how I want it!

        ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

        H Offline
        H Offline
        hairy_hats
        wrote on last edited by
        #31

        leppie wrote:

        I write the code exactly how I want it!

        So the bugs are deliberate?

        L 1 Reply Last reply
        0
        • N Nish Nishant

          Many people don't know what C#'s var means. They incorrectly think it's not type-safe! :-)

          Regards, Nish


          Are you addicted to CP? If so, check this out: The Code Project Forum Analyzer : Find out how much of a life you don't have! My technology blog: voidnish.wordpress.com

          P Offline
          P Offline
          Peter Mulholland
          wrote on last edited by
          #32

          I haven't looked at it enough to concern myself with whether or not it's type safe. I don't think it aids code readability, and I've never found a situation where I needed to use it.

          Pete

          N 1 Reply Last reply
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          • L leppie

            Reason for my 1 vote: There is nothing wrong with that. If you need to get the type, just hover over the 'var' in the IDE.

            ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

            B Offline
            B Offline
            BobJanova
            wrote on last edited by
            #33

            It's nice to be able to read the code without hovering the mouse over things. And one might not be in an IDE at the time.

            L 1 Reply Last reply
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            • L leppie

              Reason for my 1 vote: There is nothing wrong with that. If you need to get the type, just hover over the 'var' in the IDE.

              ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

              P Offline
              P Offline
              PIEBALDconsult
              wrote on last edited by
              #34

              I can't hover over it when it's printed on a page, posted in a message here, displayed by someone else on a big screen in a meeting, etc.

              1 Reply Last reply
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              • M Mario Majcica

                I'm so pissed of by var abusers. They do not understand that are making code unreadable, for what, writing var instead of string? Having the same problems in your company? ex.

                var metadataValues = new List<object>();
                foreach (var metadataDefName in metadataDefNames)
                {
                var name = metadataDefName;
                // Search definition with the same name.
                var metadata = metadataCollection.FirstOrDefault(
                metadataDef => String.Equals(metadataDef.MetaData.Name, name, StringComparison.OrdinalIgnoreCase));
                ...

                Cheers!

                P Offline
                P Offline
                PIEBALDconsult
                wrote on last edited by
                #35

                GAH! I don't need to see that when I first wake up in the morning! What were you thinking, man? Post it later in the day. :~ But I certainly agree with you.

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                • P PIEBALDconsult

                  GAH! I don't need to see that when I first wake up in the morning! What were you thinking, man? Post it later in the day. :~ But I certainly agree with you.

                  M Offline
                  M Offline
                  Mario Majcica
                  wrote on last edited by
                  #36

                  Healing my frustrations here!

                  1 Reply Last reply
                  0
                  • H hairy_hats

                    leppie wrote:

                    I write the code exactly how I want it!

                    So the bugs are deliberate?

                    L Offline
                    L Offline
                    leppie
                    wrote on last edited by
                    #37

                    viaducting wrote:

                    So the bugs are deliberate?

                    What bugs? ;P But in reality, I loathe typing, so I try code correctly the first time. I dont mind spending 90% of my time figuring out the entire solution mentally. You type less, and debug almost never :) Or maybe that is just how I work :rolleyes:

                    ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

                    B 1 Reply Last reply
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                    • P Peter Mulholland

                      I haven't looked at it enough to concern myself with whether or not it's type safe. I don't think it aids code readability, and I've never found a situation where I needed to use it.

                      Pete

                      N Offline
                      N Offline
                      Nish Nishant
                      wrote on last edited by
                      #38

                      Peter Mulholland wrote:

                      I don't think it aids code readability, and I've never found a situation where I needed to use it.

                      You absolutely need it with anonymous types, and it's more than handy with LINQ where you know it's returning some collection but don't know or care what type it is.

                      Regards, Nish


                      Are you addicted to CP? If so, check this out: The Code Project Forum Analyzer : Find out how much of a life you don't have! My technology blog: voidnish.wordpress.com

                      1 Reply Last reply
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                      • B BobJanova

                        It's nice to be able to read the code without hovering the mouse over things. And one might not be in an IDE at the time.

                        L Offline
                        L Offline
                        leppie
                        wrote on last edited by
                        #39

                        BobJanova wrote:

                        It's nice to be able to read the code without hovering the mouse over things.

                        Knowing the type is not really necessary if the code is unambiguous. Just replace the type with some type 'Foo' with a property of 'Bar'. Now if we have 10 types, all with a property 'Bar', yeah then it gets shitty. :)

                        ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

                        B 1 Reply Last reply
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                        • OriginalGriffO OriginalGriff

                          It's VB creep: The bits of VB that mean that you don't have to think about what you are doing are slowly being introduced to C#. Coming soon: "On Error Resume Next" Then it will be time to go back to C++ because C# will be mostly used by lazy idiots who don't care a fig for maintenance.

                          Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

                          V Offline
                          V Offline
                          Vark111
                          wrote on last edited by
                          #40

                          OriginalGriff wrote:

                          Coming soon: "On Error Resume Next"

                          What do you mean "coming soon"? It's already there:

                          try
                          {
                              //some op
                          }
                          catch {}
                          
                          B OriginalGriffO 2 Replies Last reply
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                          • V Vark111

                            OriginalGriff wrote:

                            Coming soon: "On Error Resume Next"

                            What do you mean "coming soon"? It's already there:

                            try
                            {
                                //some op
                            }
                            catch {}
                            
                            B Offline
                            B Offline
                            Bergholt Stuttley Johnson
                            wrote on last edited by
                            #41

                            I did know a programmer that did just that, first thing he wrote in any method class etc was a try catch block in which he put all his code, and yes it had a empty catch oh and he was a ex-VB programmer too was soooo proud his code never threw exceptions

                            You cant outrun the world, but there is no harm in getting a head start Real stupidity beats artificial intelligence every time.

                            1 Reply Last reply
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                            • L leppie

                              viaducting wrote:

                              So the bugs are deliberate?

                              What bugs? ;P But in reality, I loathe typing, so I try code correctly the first time. I dont mind spending 90% of my time figuring out the entire solution mentally. You type less, and debug almost never :) Or maybe that is just how I work :rolleyes:

                              ((λ (x) `(,x ',x)) '(λ (x) `(,x ',x)))

                              B Offline
                              B Offline
                              Bergholt Stuttley Johnson
                              wrote on last edited by
                              #42

                              Sorry "Undocumented features"

                              You cant outrun the world, but there is no harm in getting a head start Real stupidity beats artificial intelligence every time.

                              1 Reply Last reply
                              0
                              • V Vark111

                                OriginalGriff wrote:

                                Coming soon: "On Error Resume Next"

                                What do you mean "coming soon"? It's already there:

                                try
                                {
                                    //some op
                                }
                                catch {}
                                
                                OriginalGriffO Offline
                                OriginalGriffO Offline
                                OriginalGriff
                                wrote on last edited by
                                #43

                                Takes too much typing for most idiots:

                                    Bitmap GetScreen()
                                        {
                                        try {Rectangle screenRegion = Screen.AllScreens\[0\].Bounds;} catch{}
                                        try {Bitmap grab = new Bitmap(SystemInformation.PrimaryMonitorSize.Width,
                                                                      SystemInformation.PrimaryMonitorSize.Height,
                                                                      PixelFormat.Format32bppArgb);} catch{}
                                        using (Graphics screenGraphics = Graphics.FromImage(grab))
                                            {
                                            try {screenGraphics.CopyFromScreen(screenRegion.Left, screenRegion.Top, 0, 0, screenRegion.Size);} catch{}
                                            }
                                        return grab;
                                        }
                                

                                With resume next, you just add it once and walk away - until the problem is so big it bites you on the ass and you have no idea where it started... X|

                                Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

                                "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                                "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                                1 Reply Last reply
                                0
                                • M Mario Majcica

                                  I'm so pissed of by var abusers. They do not understand that are making code unreadable, for what, writing var instead of string? Having the same problems in your company? ex.

                                  var metadataValues = new List<object>();
                                  foreach (var metadataDefName in metadataDefNames)
                                  {
                                  var name = metadataDefName;
                                  // Search definition with the same name.
                                  var metadata = metadataCollection.FirstOrDefault(
                                  metadataDef => String.Equals(metadataDef.MetaData.Name, name, StringComparison.OrdinalIgnoreCase));
                                  ...

                                  Cheers!

                                  L Offline
                                  L Offline
                                  Luca Leonardo Scorcia
                                  wrote on last edited by
                                  #44

                                  While your example is clearly awful, I find myself using it quite consistently recently. It helps a lot with lambdas, nested generics and similar verbose type definitions. Guess it's just a language feature like the others. My personal rule is to use it only for complex (more than 1 type parameter) generic types. I'm a heavy Resharper user, but that var rule is the first one I turn off. The second one is the 'Warning on unnecessary this.' rule. Guess it's time to introduce your colleagues to FxCop :) Cheers!

                                  Luca The Price of Freedom is Eternal Vigilance. -- Wing Commander IV En Það Besta Sem Guð Hefur Skapað, Er Nýr Dagur. (But the best thing God has created, is a New Day.) -- Sigur Ròs - Viðrar vel til loftárása

                                  M 1 Reply Last reply
                                  0
                                  • L Luca Leonardo Scorcia

                                    While your example is clearly awful, I find myself using it quite consistently recently. It helps a lot with lambdas, nested generics and similar verbose type definitions. Guess it's just a language feature like the others. My personal rule is to use it only for complex (more than 1 type parameter) generic types. I'm a heavy Resharper user, but that var rule is the first one I turn off. The second one is the 'Warning on unnecessary this.' rule. Guess it's time to introduce your colleagues to FxCop :) Cheers!

                                    Luca The Price of Freedom is Eternal Vigilance. -- Wing Commander IV En Það Besta Sem Guð Hefur Skapað, Er Nýr Dagur. (But the best thing God has created, is a New Day.) -- Sigur Ròs - Viðrar vel til loftárása

                                    M Offline
                                    M Offline
                                    Mario Majcica
                                    wrote on last edited by
                                    #45

                                    I need the machine that on StyleCop warning hits the responsible person with a bat! :)

                                    L 1 Reply Last reply
                                    0
                                    • M Mario Majcica

                                      I need the machine that on StyleCop warning hits the responsible person with a bat! :)

                                      L Offline
                                      L Offline
                                      Luca Leonardo Scorcia
                                      wrote on last edited by
                                      #46

                                      That's just fine, I'm completely irresponsible :-\ ;)

                                      Luca The Price of Freedom is Eternal Vigilance. -- Wing Commander IV En Það Besta Sem Guð Hefur Skapað, Er Nýr Dagur. (But the best thing God has created, is a New Day.) -- Sigur Ròs - Viðrar vel til loftárása

                                      1 Reply Last reply
                                      0
                                      • N Nish Nishant

                                        Peter Mulholland wrote:

                                        It was a mistake to add it to the C# language.

                                        C++ has it too now, it's called auto.

                                        auto x = SomeFunc();

                                        Regards, Nish


                                        Are you addicted to CP? If so, check this out: The Code Project Forum Analyzer : Find out how much of a life you don't have! My technology blog: voidnish.wordpress.com

                                        P Offline
                                        P Offline
                                        Peter Mulholland
                                        wrote on last edited by
                                        #47

                                        Wonderful, and I thought the C++ code I've been looking at for 3 years couldn't get any worse. Now it can.

                                        Pete

                                        N 1 Reply Last reply
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                                        • P Peter Mulholland

                                          Wonderful, and I thought the C++ code I've been looking at for 3 years couldn't get any worse. Now it can.

                                          Pete

                                          N Offline
                                          N Offline
                                          Nish Nishant
                                          wrote on last edited by
                                          #48

                                          :-D

                                          Regards, Nish


                                          Are you addicted to CP? If so, check this out: The Code Project Forum Analyzer : Find out how much of a life you don't have! My technology blog: voidnish.wordpress.com

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