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C# 4.0

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  • E Ennis Ray Lynch Jr

    The Powers Collection or a simple hand rolled generic handles tuples, Pair<int, int> I have always said that developers need to focus on mastering what has been provided in 2.0 before even thinking about adding more candy.

    Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
    Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway
    Most of this sig is for Google, not ego.

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    Oshtri Deka
    wrote on last edited by
    #85

    Hallelujah!

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    • C Christian Graus

      Yeah, the C# team explicitly stated they always try to make the language simple rather than powerful. Which is retarded IMO. Sure, you can make mistakes with powerful features, but that's not the point.

      Christian Graus No longer a Microsoft MVP, but still happy to answer your questions.

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      Don Miguel
      wrote on last edited by
      #86

      Christian Graus wrote:

      they always try to make the language simple

      Indeed, C# is a simple language, and was build exactly with this in mind. To be simple. Why now we just ask for features which belongs to higher level languages? Let it simple. For complex things, use C/C++. For critical and low level, use assembler. For functional use F#. And so on. Is it like we ask for VB to have some super features, which were never supposed to be in a programming language addressing the "features" VB address...

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      • J Jamie Nordmeyer

        So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

        public int,int MinMax(int[] numbers)
        {
        int min, max;
        // Code to calculate min/max

        return min, max;
        }

        What do you think? What would be good for the next version?

        Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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        Oshtri Deka
        wrote on last edited by
        #87

        As I posted before, I agree with Ennis Ray Lynch, Jr. that programmers should first learn all features of .Net 2.0 before jumping on new and shiny stuff. I would personally like to see static interfaces and inheritance from multiple classes.

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        • J Jamie Nordmeyer

          So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

          public int,int MinMax(int[] numbers)
          {
          int min, max;
          // Code to calculate min/max

          return min, max;
          }

          What do you think? What would be good for the next version?

          Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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          Don Miguel
          wrote on last edited by
          #88

          Well, I'll be satisfied if C# will become sometime, in the future, as good as Java already is today... ;P

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          • S Sunny Ahuwanya

            Actually, foreach is needed. Without foreach, you can't guarantee that the Enumerable pattern is followed. You don't expect developers to consistently follow the pattern using a for or while loop.

            Sunny Ahuwanya "The beauty of the desert is that it hides a well somewhere" -- Antoine de Saint Exupéry

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            Russell Jones
            wrote on last edited by
            #89

            Surely without foreach you'd just be in the same position as Java was (pre v1.5?) where you have to make a call to getIterator() and then loop through that. It's much more unfriendly than foreach but it still does the same thing Russ

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            • J Jamie Nordmeyer

              I saw someone comment on that on another forum. Basically, you'd have something like this (using his sample syntax):

              int? x = Company?.Person["Bob"]?.Age;

              If Company or Company.Person["Bob"] were null, then x would be set to null, rather than getting an exception. I likes.

              Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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              User 4641568
              wrote on last edited by
              #90

              hm.. sexy!

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              • A alan cooper

                I bet 99% of you disagree with this one! I would like to see multiple inheritance and full operator overloading available in C#.

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                Rocky Moore
                wrote on last edited by
                #91

                Ditto! While I seldom use multiple inheritance, it still would be great to have it availble for those times that I do.

                Rocky <>< Recent Blog Post: Netflix Gets Starz!

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                • J Jamie Nordmeyer

                  So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

                  public int,int MinMax(int[] numbers)
                  {
                  int min, max;
                  // Code to calculate min/max

                  return min, max;
                  }

                  What do you think? What would be good for the next version?

                  Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                  Rocky Moore
                  wrote on last edited by
                  #92

                  Yep, that would be handy!

                  Rocky <>< Recent Blog Post: Netflix Gets Starz!

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                  • J Jamie Nordmeyer

                    So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

                    public int,int MinMax(int[] numbers)
                    {
                    int min, max;
                    // Code to calculate min/max

                    return min, max;
                    }

                    What do you think? What would be good for the next version?

                    Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                    SlingBlade
                    wrote on last edited by
                    #93

                    How about a way to check against all values in an array or enumerabale at once with perhaps the keyword 'any' like below.

                    int[] supportedValues = new int[] { 3, 4, 5 }
                    int x = 4;

                    if (x == any supportedValues)
                    {
                    // Do something.
                    }

                    Instead of:

                    int[] supportedValues = new int[] { 3, 4, 5 }
                    int x = 4;
                    bool xIsSupported = false;

                    foreach (int value in supportedValues)
                    {
                    if (x == value)
                    xIsSupported = true;
                    }

                    if (xIsSupported)
                    {
                    // Do something.
                    }

                    Good idea?

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                    • J Jamie Nordmeyer

                      So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

                      public int,int MinMax(int[] numbers)
                      {
                      int min, max;
                      // Code to calculate min/max

                      return min, max;
                      }

                      What do you think? What would be good for the next version?

                      Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                      Maximus014
                      wrote on last edited by
                      #94

                      Can anyone say partial properties? Being able to add attributes to properties created in generated code would be awesome (using a the MetadataType approach is such an ugly hack). I would also love to be able to add extension methods to a static class. I know everyone has wanted to add some functionality to Membership or Math.

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                      • J Jamie Nordmeyer

                        So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

                        public int,int MinMax(int[] numbers)
                        {
                        int min, max;
                        // Code to calculate min/max

                        return min, max;
                        }

                        What do you think? What would be good for the next version?

                        Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                        Dave Parker
                        wrote on last edited by
                        #95

                        What's wrong with out parameters?

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                        • L Leslie Sanford

                          Christian Graus wrote:

                          I'd love to see a const keyword on parameters to methods

                          Seems to me they could use the readonly keyword for this instead of introducing a new keyword. EDIT: :doh: const is already a keyword in C#. Shows you how rusty my C# is already... I'm not really up on compiler writing, so I'm not sure how hard this would be to implement in C#. The compiler would have to make sure that read-only properties/methods are called on readonly/const parameters. That may be nontrivial.

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                          Dave Parker
                          wrote on last edited by
                          #96

                          Shame neither of them act as a kind of write-once property (other than readonly when set in a constructor) so you can't have constant DateTimes and things.

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                          • P Pawel Krakowiak

                            MrPlankton wrote:

                            well then how about a void functA("a");

                            What if there's not such method?

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                            MrPlankton
                            wrote on last edited by
                            #97

                            You of course would write it, to handle that case.

                            MrPlankton

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                            • L Lost User

                              I believe this is a programming question! :mad:

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                              Jamie Nordmeyer
                              wrote on last edited by
                              #98

                              No it's not. I'm not asking how to solve anything. Simply a feature ideas request. And since you're the only one so far to suggest this is a programming question, you're the only one who thinks so.

                              Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                              • D Donkey Master

                                Christian Graus wrote:

                                I can use const to tell a user when they can trust my code not to change their stuff.

                                erm, I don't see how that would work. I thought that const was more of a promise to yourself, or to implementors, not to users. Nothing prevents you from calling methods and setting fields, right? Ok, let me start it again. What is the const keyword supposed to do in parameters that has an effect outside the method?

                                "Computer Science is no more about computers than astronomy is about telescopes." - Edsger Dijkstra

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                                Jamie Nordmeyer
                                wrote on last edited by
                                #99

                                Here's an example of what I think he's saying:

                                public void DoSomething(const Employee emp)
                                {
                                emp.Age = 32; // This would not compile.
                                }

                                An object is passed by reference, so its properties are settable. You don't want to make the Age property read only, because normally, you want the consumer to be able to set it. But what if DoSomething was meant to be a final validation, and you didn't want anything in the object to change, because it could mess up state elsewhere? The const keyword would allow the developer to leave a property or field writable, but still be able to restrict when it could be written to.

                                Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                                • M MrPlankton

                                  You of course would write it, to handle that case.

                                  MrPlankton

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                                  Pawel Krakowiak
                                  wrote on last edited by
                                  #100

                                  MrPlankton wrote:

                                  You of course would write it, to handle that case.

                                  I thought so. :) Then it's the same as with the current lack of optional method arguments - you have to write overloads and people complain. Now you would have to write void methods...

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                                  • J Jamie Nordmeyer

                                    So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

                                    public int,int MinMax(int[] numbers)
                                    {
                                    int min, max;
                                    // Code to calculate min/max

                                    return min, max;
                                    }

                                    What do you think? What would be good for the next version?

                                    Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                                    H Offline
                                    Hooga Booga
                                    wrote on last edited by
                                    #101

                                    Free beer!

                                    P 1 Reply Last reply
                                    0
                                    • J Jamie Nordmeyer

                                      So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

                                      public int,int MinMax(int[] numbers)
                                      {
                                      int min, max;
                                      // Code to calculate min/max

                                      return min, max;
                                      }

                                      What do you think? What would be good for the next version?

                                      Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                                      U Offline
                                      User 3728064
                                      wrote on last edited by
                                      #102

                                      really interesting!

                                      1 Reply Last reply
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                                      • J Jamie Nordmeyer

                                        here here!

                                        Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                                        Giampaolo Papotti
                                        wrote on last edited by
                                        #103

                                        I strongly Agree! C# cut-offs from c++ were really too deep. cons keyword (both on parameters and members signatures) shoud be a MUST in any oo language. And what about the annoying lack of default in parameters? I'd like to see c# designers and gurus dealing with Office PIA... I'm sure they would have a private build of csc.exe with default parameters implementeed .... InvokeExcelStuff(theOnlyNeededParameter, null, null, null, null, null, null, null, null, null, null, null, null, null, null....)

                                        S 1 Reply Last reply
                                        0
                                        • J Jamie Nordmeyer

                                          So now that C# 4.0 is being talked about, I was wondering what people thought would be good additions to the language. Sorry if this is a repost, but I went through several pages, and didn't see anything, so... What I'd frankly love to see would be tuples. Rather than having to use multiple 'out' parameters, you'd just return multiple values:

                                          public int,int MinMax(int[] numbers)
                                          {
                                          int min, max;
                                          // Code to calculate min/max

                                          return min, max;
                                          }

                                          What do you think? What would be good for the next version?

                                          Kyosa Jamie Nordmeyer - Taekwondo Yi (2nd) Dan Portland, Oregon, USA

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                                          P Offline
                                          pherschel
                                          wrote on last edited by
                                          #104

                                          I'd like to see built in threading. Example: int x = CalcXDataValues() &; <- run as thread int y = CalcYDataValues() &; int z = x + y; // will not execute until x and y are set!

                                          - Pete

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