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  4. Hidden Features of C#

Hidden Features of C#

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  • C Chris Maunder

    Hidden? You have to be kidding me. Each iteration of C# has been preceeded with a barrage of evangalism and education, and to be unaware of things such as "as" can only mean one has had one's head firmly buried in the sand. readonly? hidden? :doh:

    cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP

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    SalarSoft
    wrote on last edited by
    #13

    Actually I just copied the stackoverflow title! have you guys noticed __makeref ? http://stackoverflow.com/questions/9033/hidden-features-of-c/9125#9125[^] more info: http://www.eggheadcafe.com/articles/20030114.asp[^] There are good tricks too. Worth reading that, but should I change this topic title?!

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    • C Chris Maunder

      Hidden? You have to be kidding me. Each iteration of C# has been preceeded with a barrage of evangalism and education, and to be unaware of things such as "as" can only mean one has had one's head firmly buried in the sand. readonly? hidden? :doh:

      cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP

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      AspDotNetDev
      wrote on last edited by
      #14

      Actually, it does seem very obscure. Much like this operator I stumbled upon the other day:

      int x = 5 + 1;

      Much to my surprise, this operator actually performs TWO distinct operations, depending on context!

      string x = "5" + "1";

      My God! An operator that BOTH adds integers AND concatenates strings. I believe it even works on non integral types. Truly a Jack of all trades! Disclaimer: this post is a joke.

      [Forum Guidelines]

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      • A AspDotNetDev

        Actually, it does seem very obscure. Much like this operator I stumbled upon the other day:

        int x = 5 + 1;

        Much to my surprise, this operator actually performs TWO distinct operations, depending on context!

        string x = "5" + "1";

        My God! An operator that BOTH adds integers AND concatenates strings. I believe it even works on non integral types. Truly a Jack of all trades! Disclaimer: this post is a joke.

        [Forum Guidelines]

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        fjdiewornncalwe
        wrote on last edited by
        #15

        Do I sense some sarcasm... :)

        I wasn't, now I am, then I won't be anymore.

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        • F fjdiewornncalwe

          Do I sense some sarcasm... :)

          I wasn't, now I am, then I won't be anymore.

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          AspDotNetDev
          wrote on last edited by
          #16

          I hope so! ;)

          [Forum Guidelines]

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          • A AspDotNetDev

            Actually, it does seem very obscure. Much like this operator I stumbled upon the other day:

            int x = 5 + 1;

            Much to my surprise, this operator actually performs TWO distinct operations, depending on context!

            string x = "5" + "1";

            My God! An operator that BOTH adds integers AND concatenates strings. I believe it even works on non integral types. Truly a Jack of all trades! Disclaimer: this post is a joke.

            [Forum Guidelines]

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            Chris Meech
            wrote on last edited by
            #17

            It's a good thing it's obscure, because the second use gives a result of 51 when the correct answer is 6. ;)

            Chris Meech I am Canadian. [heard in a local bar] In theory there is no difference between theory and practice. In practice there is. [Yogi Berra] posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]

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            • C Chris Meech

              It's a good thing it's obscure, because the second use gives a result of 51 when the correct answer is 6. ;)

              Chris Meech I am Canadian. [heard in a local bar] In theory there is no difference between theory and practice. In practice there is. [Yogi Berra] posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]

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              AspDotNetDev
              wrote on last edited by
              #18

              Chris Meech wrote:

              the second use gives a result of 51 when the correct answer is 6

              Aw noo! I must go back and correct all teh codez for my area summation algorithm! I don't want my boss to see this mistake... time for an area 51 cover-up.

              [Forum Guidelines]

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              • K Kevin Drzycimski

                GenJerDan wrote:

                Ja, und hinterher ein Nasenbär und keiner weiss warum.

                oh, der kam unerwartet. aber werde ich mir merken :-D

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                swatadas
                wrote on last edited by
                #19

                :laugh:

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                • S SalarSoft

                  Hidden Features of C# Personally I like ?? operator and started using it since then:

                  private IList<Foo> _foo;

                  public IList<Foo> ListOfFoo
                  { get { return _foo ?? (_foo = new List<Foo>()); } }

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                  maq_rohit
                  wrote on last edited by
                  #20

                  hidden?

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                  • R riced

                    SalarSoft wrote:

                    There are keywords that are not documented.

                    Tried reading the language specs? That documents them. I had a quick look at the StackOverflow link - if these are hidden features they can't have been looking at anything beyond C# in 5 :laugh: minutes.

                    Regards David R --------------------------------------------------------------- "Every program eventually becomes rococo, and then rubble." - Alan Perlis The only valid measurement of code quality: WTFs/minute.

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                    Keith Barrow
                    wrote on last edited by
                    #21

                    Actually,, undocumented keywords do exist in c#. They are undocumented as MS don't want us to use them (e.g. there is a high potential for a visit from the FU Fairy). See http://davesbox.com/archive/2008/12/29/documenting-undocumented-features.aspx[^]

                    Sort of a cross between Lawrence of Arabia and Dilbert.[^]
                    -Or-
                    A Dead ringer for Kate Winslett[^]

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                    • K Keith Barrow

                      Actually,, undocumented keywords do exist in c#. They are undocumented as MS don't want us to use them (e.g. there is a high potential for a visit from the FU Fairy). See http://davesbox.com/archive/2008/12/29/documenting-undocumented-features.aspx[^]

                      Sort of a cross between Lawrence of Arabia and Dilbert.[^]
                      -Or-
                      A Dead ringer for Kate Winslett[^]

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                      riced
                      wrote on last edited by
                      #22

                      Keith Barrow wrote:

                      undocumented keywords

                      That looks like an oxymoron - but that's a debate about semantics. There are identifiers, such as __reftype, that act as though they are keyword in .Net but are not specified as keywords in the C# language. These are implementation details so may not be 'keywords' in e.g. Mono. I don't know of a better way to describe such identifiers than 'undocumented keywords' but the phrase leaves me with bad taste - rather like beetroot. :)

                      Regards David R --------------------------------------------------------------- "Every program eventually becomes rococo, and then rubble." - Alan Perlis The only valid measurement of code quality: WTFs/minute.

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                      • S SalarSoft

                        Hidden Features of C# Personally I like ?? operator and started using it since then:

                        private IList<Foo> _foo;

                        public IList<Foo> ListOfFoo
                        { get { return _foo ?? (_foo = new List<Foo>()); } }

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                        Monjurul Habib
                        wrote on last edited by
                        #23

                        I think this is not hidden features .. most of C# developers already know this and this is available everywhere.

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                        • M Monjurul Habib

                          I think this is not hidden features .. most of C# developers already know this and this is available everywhere.

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                          Lost User
                          wrote on last edited by
                          #24

                          I do agree !

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                          • S SalarSoft

                            RTFM is done for C#2 and upgraded for C#3 and 4, but still seems I missed some features during upgrade! it happens ;P

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                            the headless nick
                            wrote on last edited by
                            #25

                            What is RTFM :cool::

                            --- With regards... The nk.

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