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Hidden Features of C#

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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>()); } }

    C Offline
    C Offline
    Chris Maunder
    wrote on last edited by
    #12

    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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    • 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

      S Offline
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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]

          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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            A Offline
            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]

              C Offline
              C Offline
              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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                A Offline
                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

                  S Offline
                  S Offline
                  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>()); } }

                    M Offline
                    M Offline
                    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.

                      K Offline
                      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[^]

                        R Offline
                        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>()); } }

                          M Offline
                          M Offline
                          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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                            L Offline
                            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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                              T Offline
                              the headless nick
                              wrote on last edited by
                              #25

                              What is RTFM :cool::

                              --- With regards... The nk.

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