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WriteOnly

Scheduled Pinned Locked Moved The Weird and The Wonderful
csharpjavadotnetvisual-studio
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  • T The Cake of Deceit

    Did you know VB.NET has a WriteOnly property to make properties into /dev/nulls? :wtf: It even offers IntelliSense to remove the Get accessors!

    CLR: Removes tough Java-based stains fast!

    D Offline
    D Offline
    Dave Kreskowiak
    wrote on last edited by
    #10

    Uhh, no. WriteOnly only turns off the gettor of a property. A /dev/null is a completely different concept.

    A guide to posting questions on CodeProject[^]
    Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
         2006, 2007, 2008

    T 1 Reply Last reply
    0
    • D Dan Neely

      Member 2411327 wrote:

      and on vb i don't have to compile the code to see errors.

      I don't know what that isn't an IDE option. It's good for smaller projects but will hammer the CPU and slow the IDE down significantly on larger projects.

      You know, every time I tried to win a bar-bet about being able to count to 1000 using my fingers I always got punched out when I reached 4.... -- El Corazon

      A Offline
      A Offline
      Anton Afanasyev
      wrote on last edited by
      #11

      dan neely wrote:

      It's good for smaller projects but will hammer the CPU and slow the IDE down significantly on larger projects.

      Doesn't matter. Its impossible to make a large project in VB anyway: you'll go crazy from the language itself;P

      "impossible" is just an opinion.

      W 1 Reply Last reply
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      • D Dave Kreskowiak

        Uhh, no. WriteOnly only turns off the gettor of a property. A /dev/null is a completely different concept.

        A guide to posting questions on CodeProject[^]
        Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
             2006, 2007, 2008

        T Offline
        T Offline
        The Cake of Deceit
        wrote on last edited by
        #12

        Who would turn off the gettor of a property? It turns them into black holes, and a /dev/null is one too.

        CLR: Removes tough Java-based stains fast!

        D D 2 Replies Last reply
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        • A Anton Afanasyev

          dan neely wrote:

          It's good for smaller projects but will hammer the CPU and slow the IDE down significantly on larger projects.

          Doesn't matter. Its impossible to make a large project in VB anyway: you'll go crazy from the language itself;P

          "impossible" is just an opinion.

          W Offline
          W Offline
          Werries
          wrote on last edited by
          #13

          Hi all of you that think VB are such a horrible language to use for coding. I’ve notice some of you think a large project can’t be done in VB. Well, I’ve got news for you. I work for a company that develops Point of Sale software for the last 14 years, and we are currently working on a new version for the Point of Sale that has at least 2 million lines of source code in it! It is a full client-server application and can be used on a single PC and up to thousands of computers all with a breeze. Programming some parts of the application in C and other languages, VB still is the most organised and understandable code there is. Call a project with more than 2 million lines of source code small? The project contains about 121 dll’s written in VB6 and about 67 dll’s written in VB.Net. Currently we are converting all the VB6 dll’s to VB.Net dll’s. After all, it is not the language that makes an application what it is, but the programmer’s ability to develop good and reliable code, regardless of the language. ;)

          A programmer's life is good... or is it?? Ek dink nie so nie!

          T M 2 Replies Last reply
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          • T The Cake of Deceit

            Who would turn off the gettor of a property? It turns them into black holes, and a /dev/null is one too.

            CLR: Removes tough Java-based stains fast!

            D Offline
            D Offline
            Dan Neely
            wrote on last edited by
            #14

            Someone writing software to control an unbuffered output device? If there's no buffer, you can't change anything that was written out, so the getter is utterly pointless.

            You know, every time I tried to win a bar-bet about being able to count to 1000 using my fingers I always got punched out when I reached 4.... -- El Corazon

            1 Reply Last reply
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            • T The Cake of Deceit

              Who would turn off the gettor of a property? It turns them into black holes, and a /dev/null is one too.

              CLR: Removes tough Java-based stains fast!

              D Offline
              D Offline
              Dave Kreskowiak
              wrote on last edited by
              #15

              Alpha Nerd wrote:

              It turns them into black holes, and a /dev/null is one too.

              Not quite. It turns a property into something akin to a voting box. You put your vote in, and there's no way to get it out. The class the property is defined in gets to do whatever it needs to with the data that comes in. In a "blackhole" null device, there isn't any processing allowable on the bits that end up in there...

              A guide to posting questions on CodeProject[^]
              Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                   2006, 2007, 2008

              L T 3 Replies Last reply
              0
              • D Dave Kreskowiak

                Alpha Nerd wrote:

                It turns them into black holes, and a /dev/null is one too.

                Not quite. It turns a property into something akin to a voting box. You put your vote in, and there's no way to get it out. The class the property is defined in gets to do whatever it needs to with the data that comes in. In a "blackhole" null device, there isn't any processing allowable on the bits that end up in there...

                A guide to posting questions on CodeProject[^]
                Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                     2006, 2007, 2008

                L Offline
                L Offline
                Luc Pattyn
                wrote on last edited by
                #16

                you're familiar with the software that runs in a black hole? I want you to write an article on this, that is assuming you can get it out of there.

                Luc Pattyn [Forum Guidelines] [My Articles]


                This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


                D CPalliniC 2 Replies Last reply
                0
                • B Brady Kelly

                  Alpha Nerd wrote:

                  And if you use it, it turns your code into a coding horror.

                  Surely if you use it, you have a reason, and thus your code will not be a horror?

                  Pits fall into Chuck Norris.

                  T Offline
                  T Offline
                  The Cake of Deceit
                  wrote on last edited by
                  #17

                  There is no reason for an excuse of using that thing.

                  CLR: Removes tough Java-based stains fast!

                  R 1 Reply Last reply
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                  • T The Cake of Deceit

                    There is no reason for an excuse of using that thing.

                    CLR: Removes tough Java-based stains fast!

                    R Offline
                    R Offline
                    Robert Surtees
                    wrote on last edited by
                    #18

                    Maybe the property is part of a quantum computer and so write only to spare the possible life of a cat.

                    T 1 Reply Last reply
                    0
                    • R Robert Surtees

                      Maybe the property is part of a quantum computer and so write only to spare the possible life of a cat.

                      T Offline
                      T Offline
                      The Cake of Deceit
                      wrote on last edited by
                      #19

                      Robert Surtees wrote:

                      Maybe the property is part of a quantum computer and so write only to spare the possible life of a cat.

                      You would need 9 WriteOnly properties then. Remember; they have 9 lives! LOL. :laugh: (who would build a supercomputer in VB? the language is slightly crippled, but this WriteOnly thing gives a advantage over C# or the awful C++)

                      CLR: Removes tough Java-based stains fast!

                      R 1 Reply Last reply
                      0
                      • D Dave Kreskowiak

                        Alpha Nerd wrote:

                        It turns them into black holes, and a /dev/null is one too.

                        Not quite. It turns a property into something akin to a voting box. You put your vote in, and there's no way to get it out. The class the property is defined in gets to do whatever it needs to with the data that comes in. In a "blackhole" null device, there isn't any processing allowable on the bits that end up in there...

                        A guide to posting questions on CodeProject[^]
                        Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                             2006, 2007, 2008

                        T Offline
                        T Offline
                        The Cake of Deceit
                        wrote on last edited by
                        #20

                        Unless you do this: Public WriteOnly Property example As Object Set(ByVal value As Object) ' Do Nothing Here, Process Nothing Here End Set End Property

                        CLR: Removes tough Java-based stains fast!

                        1 Reply Last reply
                        0
                        • E Ed Poore

                          So does C# from what I can remember.

                          T Offline
                          T Offline
                          The Cake of Deceit
                          wrote on last edited by
                          #21

                          But you do it manually. (and I think it complains.) CLR: Removes tough Java-based stains fast!

                          1 Reply Last reply
                          0
                          • L Luc Pattyn

                            you're familiar with the software that runs in a black hole? I want you to write an article on this, that is assuming you can get it out of there.

                            Luc Pattyn [Forum Guidelines] [My Articles]


                            This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


                            D Offline
                            D Offline
                            Dave Kreskowiak
                            wrote on last edited by
                            #22

                            Yes, I have SEEN the other side! Nothing much to see, it's pretty dark...

                            A guide to posting questions on CodeProject[^]
                            Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                                 2006, 2007, 2008

                            L 1 Reply Last reply
                            0
                            • L Luc Pattyn

                              you're familiar with the software that runs in a black hole? I want you to write an article on this, that is assuming you can get it out of there.

                              Luc Pattyn [Forum Guidelines] [My Articles]


                              This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


                              CPalliniC Offline
                              CPalliniC Offline
                              CPallini
                              wrote on last edited by
                              #23

                              I'm familiar, hence I'm going to write few lines explaining..., but, wait, maybe I'm too close to, s**t.................................... :)

                              If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                              This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                              In testa che avete, signor di Ceprano?

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                              0
                              • T The Cake of Deceit

                                Did you know VB.NET has a WriteOnly property to make properties into /dev/nulls? :wtf: It even offers IntelliSense to remove the Get accessors!

                                CLR: Removes tough Java-based stains fast!

                                V Offline
                                V Offline
                                Vasudevan Deepak Kumar
                                wrote on last edited by
                                #24

                                It is not a surprise, given that VB itself is a horror. :rolleyes:

                                Vasudevan Deepak Kumar Personal Homepage
                                Tech Gossips
                                A pessimist sees only the dark side of the clouds, and mopes; a philosopher sees both sides, and shrugs; an optimist doesn't see the clouds at all - he's walking on them. --Leonard Louis Levinson

                                1 Reply Last reply
                                0
                                • D Dave Kreskowiak

                                  Alpha Nerd wrote:

                                  It turns them into black holes, and a /dev/null is one too.

                                  Not quite. It turns a property into something akin to a voting box. You put your vote in, and there's no way to get it out. The class the property is defined in gets to do whatever it needs to with the data that comes in. In a "blackhole" null device, there isn't any processing allowable on the bits that end up in there...

                                  A guide to posting questions on CodeProject[^]
                                  Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                                       2006, 2007, 2008

                                  T Offline
                                  T Offline
                                  The Cake of Deceit
                                  wrote on last edited by
                                  #25

                                  Dave Kreskowiak wrote:

                                  Not quite. It turns a property into something akin to a voting box. You put your vote in, and there's no way to get it out.

                                  But the Get accessor only returns it. Get does not remove the item.

                                  CLR: Removes tough Java-based stains fast!

                                  1 Reply Last reply
                                  0
                                  • D Dave Kreskowiak

                                    Yes, I have SEEN the other side! Nothing much to see, it's pretty dark...

                                    A guide to posting questions on CodeProject[^]
                                    Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                                         2006, 2007, 2008

                                    L Offline
                                    L Offline
                                    Luc Pattyn
                                    wrote on last edited by
                                    #26

                                    Dave Kreskowiak wrote:

                                    it's pretty dark...

                                    are you sure? if it sucks everything in, and never lets go, it must be bloody light in there. :)

                                    Luc Pattyn [Forum Guidelines] [My Articles]


                                    This month's tips: - before you ask a question here, search CodeProject, then Google; - the quality and detail of your question reflects on the effectiveness of the help you are likely to get; - use PRE tags to preserve formatting when showing multi-line code snippets.


                                    D 1 Reply Last reply
                                    0
                                    • W Werries

                                      Hi all of you that think VB are such a horrible language to use for coding. I’ve notice some of you think a large project can’t be done in VB. Well, I’ve got news for you. I work for a company that develops Point of Sale software for the last 14 years, and we are currently working on a new version for the Point of Sale that has at least 2 million lines of source code in it! It is a full client-server application and can be used on a single PC and up to thousands of computers all with a breeze. Programming some parts of the application in C and other languages, VB still is the most organised and understandable code there is. Call a project with more than 2 million lines of source code small? The project contains about 121 dll’s written in VB6 and about 67 dll’s written in VB.Net. Currently we are converting all the VB6 dll’s to VB.Net dll’s. After all, it is not the language that makes an application what it is, but the programmer’s ability to develop good and reliable code, regardless of the language. ;)

                                      A programmer's life is good... or is it?? Ek dink nie so nie!

                                      T Offline
                                      T Offline
                                      The Cake of Deceit
                                      wrote on last edited by
                                      #27

                                      Yes, it's a good language, but I prefer C#. Besides, WriteOnly is so weirdly funny! :laugh:

                                      CLR: Removes tough Java-based stains fast!

                                      E 1 Reply Last reply
                                      0
                                      • T The Cake of Deceit

                                        Who would use it? A coding horror in VB. And if you use it, it turns your code into a coding horror. X|

                                        CLR: Removes tough Java-based stains fast!

                                        E Offline
                                        E Offline
                                        elektrowolf
                                        wrote on last edited by
                                        #28

                                        Alpha Nerd wrote:

                                        Who would use it? A coding horror in VB.

                                        In VB? In C#, too: class Foo { private int _val; public int Val { set { this._val = value; } } }

                                        1 Reply Last reply
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                                        • T The Cake of Deceit

                                          Did you know VB.NET has a WriteOnly property to make properties into /dev/nulls? :wtf: It even offers IntelliSense to remove the Get accessors!

                                          CLR: Removes tough Java-based stains fast!

                                          D Offline
                                          D Offline
                                          Dr Walt Fair PE
                                          wrote on last edited by
                                          #29

                                          The best use for write-only things, in general, is when you are dealing with real-time control interfaces. Some devices allow you to save data to a memory location or port and that sets control bits in an external device. As far as the external device is concerned, it is an input-only deal; from the program's viewpoint it's write-only and any attempt to read would be undefined or return garbage. One logical use for a write-only property would be to control interfaces with external hardware. You would define a class encapsulating the hardware access and anything that writes to the hardware without any chance of being able to read the real-time results back, would logically be marked as WriteOnly. This is fairly common when using some PIC chips, DSP chips and assorted other devices. In my DSP applications, marking output data as WriteOnly would make perfect sense, since once it is sent to the buffer, it goes out the sound interface and does not exist anywhere that is accessible to the software. (Note: I haven't done that, since I knew it was essentially write-only and never thought I might try to read it again.) To me, marking a property as WriteOnly in a VB, C, C# or any other language very clearly tells everyone not to even bother to read it back because the data no longer exists. Another use for WriteOnly properties would be when dealing with highly asychronous processes, but I won't go into that here. So, yeah, if you're dealing with stuff in your own application's memory, WriteOnly may not make much sense, but if you are dealing with control systems and external devices, it may well make perfect sense.

                                          The PetroNerd

                                          Walt Fair, Jr. Comport Computing Specializing in Technical Engineering Software

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