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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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    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]

      F Offline
      F Offline
      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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                  K Offline
                  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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                    R Offline
                    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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