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  4. LINQ: Remove first entry of groups in a list

LINQ: Remove first entry of groups in a list

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  • OriginalGriffO OriginalGriff

    Try:

    var x = list.GroupBy(g => g.Key).Select(grp => grp.Skip(1)).SelectMany(i => i);

    Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

    M Offline
    M Offline
    Mc_Topaz
    wrote on last edited by
    #3

    Thank you VERY much! :)

    OriginalGriffO 1 Reply Last reply
    0
    • M Mc_Topaz

      Thank you VERY much! :)

      OriginalGriffO Offline
      OriginalGriffO Offline
      OriginalGriff
      wrote on last edited by
      #4

      You're welcome!

      Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

      "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
      "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

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      • OriginalGriffO OriginalGriff

        Try:

        var x = list.GroupBy(g => g.Key).Select(grp => grp.Skip(1)).SelectMany(i => i);

        Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

        B Offline
        B Offline
        BillWoodruff
        wrote on last edited by
        #5

        You need a small tweak to get a one-off instance like 'baz in the result:

        var x = list.GroupBy(g => g.Key).Select(grp =>
        grp.Count() == 1
        ? grp
        : grp.Skip(1)).SelectMany(i => i);

        «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

        OriginalGriffO 1 Reply Last reply
        0
        • B BillWoodruff

          You need a small tweak to get a one-off instance like 'baz in the result:

          var x = list.GroupBy(g => g.Key).Select(grp =>
          grp.Count() == 1
          ? grp
          : grp.Skip(1)).SelectMany(i => i);

          «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

          OriginalGriffO Offline
          OriginalGriffO Offline
          OriginalGriff
          wrote on last edited by
          #6

          Yes, but his original question specifically excluded "baz".

          Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

          "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
          "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

          B 1 Reply Last reply
          0
          • OriginalGriffO OriginalGriff

            Yes, but his original question specifically excluded "baz".

            Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

            B Offline
            B Offline
            BillWoodruff
            wrote on last edited by
            #7

            I tear my hair out, throw myself at your lotus feet, and beg mercy while singing [^] :omg: I'm such a sucker for a stray 'baz :wtf: Been a very weird day !

            «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

            OriginalGriffO L 2 Replies Last reply
            0
            • B BillWoodruff

              I tear my hair out, throw myself at your lotus feet, and beg mercy while singing [^] :omg: I'm such a sucker for a stray 'baz :wtf: Been a very weird day !

              «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

              OriginalGriffO Offline
              OriginalGriffO Offline
              OriginalGriff
              wrote on last edited by
              #8

              Never any need for that Bill - you are Forgiven[^] of course. (And I love Sharon's voice)

              Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

              "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
              "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

              B 1 Reply Last reply
              0
              • B BillWoodruff

                I tear my hair out, throw myself at your lotus feet, and beg mercy while singing [^] :omg: I'm such a sucker for a stray 'baz :wtf: Been a very weird day !

                «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

                L Offline
                L Offline
                Luc Pattyn
                wrote on last edited by
                #9

                Please stop singing immediately. this is supposed to be a serious forum. ;P

                Luc Pattyn [My Articles] Nil Volentibus Arduum

                B 1 Reply Last reply
                0
                • L Luc Pattyn

                  Please stop singing immediately. this is supposed to be a serious forum. ;P

                  Luc Pattyn [My Articles] Nil Volentibus Arduum

                  B Offline
                  B Offline
                  BillWoodruff
                  wrote on last edited by
                  #10

                  Okay, got it ... I'm switching to screaming :wtf:

                  «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

                  L 1 Reply Last reply
                  0
                  • B BillWoodruff

                    Okay, got it ... I'm switching to screaming :wtf:

                    «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

                    L Offline
                    L Offline
                    Luc Pattyn
                    wrote on last edited by
                    #11

                    That would be fine in Q&A :cool:

                    Luc Pattyn [My Articles] Nil Volentibus Arduum

                    OriginalGriffO 1 Reply Last reply
                    0
                    • OriginalGriffO OriginalGriff

                      Never any need for that Bill - you are Forgiven[^] of course. (And I love Sharon's voice)

                      Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                      B Offline
                      B Offline
                      BillWoodruff
                      wrote on last edited by
                      #12

                      lovely voice, reminds me a little of Sarah Brightman. thanks, Bill

                      «One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

                      1 Reply Last reply
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                      • L Luc Pattyn

                        That would be fine in Q&A :cool:

                        Luc Pattyn [My Articles] Nil Volentibus Arduum

                        OriginalGriffO Offline
                        OriginalGriffO Offline
                        OriginalGriff
                        wrote on last edited by
                        #13

                        Only when I have finished banging my head on the desk.

                        Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                        "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                        "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                        L 1 Reply Last reply
                        0
                        • OriginalGriffO OriginalGriff

                          Only when I have finished banging my head on the desk.

                          Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                          L Offline
                          L Offline
                          Luc Pattyn
                          wrote on last edited by
                          #14

                          Are you at it again, wasn't this stretch day for you? :confused:

                          Luc Pattyn [My Articles] Nil Volentibus Arduum

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