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  4. Hidden Features of C#

Hidden Features of C#

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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.

    A 1 Reply Last reply
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    • F fjdiewornncalwe

      Do I sense some sarcasm... :)

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

      A Offline
      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]

          A Offline
          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[^]

                R 1 Reply Last reply
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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.

                    L 1 Reply Last reply
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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.

                      L Offline
                      L Offline
                      Lost User
                      wrote on last edited by
                      #24

                      I do agree !

                      1 Reply Last reply
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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

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

                        What is RTFM :cool::

                        --- With regards... The nk.

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