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  3. C# 3’s lambda etc..... Do I really need this

C# 3’s lambda etc..... Do I really need this

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  • K keencomputer

    Do I really need to learn this C# 3’s lambda whatever...........

    Tapas Shome System Software Engineer Keen Computer Solutions 1408 Erin Street Winnipeg, Manitoba Canada R3E 2S8 http://www.keencomputer.com www.ias-research.com/blog

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    Lost User
    wrote on last edited by
    #11

    They're just like nameless methods (from C# 2), but instead of the delegate keyword you have => What's there to learn?

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    • L Lost User

      They're just like nameless methods (from C# 2), but instead of the delegate keyword you have => What's there to learn?

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      Judah Gabriel Himango
      wrote on last edited by
      #12

      That's not all there is to them. Code-as-data. It's what enables Linq-to-SQL and the million + 1 LINQ providers out there.

      Religiously blogging on the intarwebs since the early 21st century: Kineti L'Tziyon Judah Himango

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      • L Lost User

        They're just like nameless methods (from C# 2), but instead of the delegate keyword you have => What's there to learn?

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        MidwestLimey
        wrote on last edited by
        #13

        Unless, of course, he never used anonymous methods either ....

        10110011001111101010101000001000001101001010001010100000100000101000001000111100010110001011001011

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        • K keencomputer

          Do I really need to learn this C# 3’s lambda whatever...........

          Tapas Shome System Software Engineer Keen Computer Solutions 1408 Erin Street Winnipeg, Manitoba Canada R3E 2S8 http://www.keencomputer.com www.ias-research.com/blog

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          J Dunlap
          wrote on last edited by
          #14

          No, you don't *have* to, but they're extremely useful and I'd highly recommend it. I wrote an article to help out with the learning process: Lambda Expressions and Expression Trees: An Introduction[^] </shameless-plug> Also check out extension methods because a lot of the places where lambdas are used involve extension methods as well. (Whoa, that's cool! :omg: I pasted the link to my article and it automatically put in the link with the article's title! Good work Chris and co! :cool: )

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          • P Pete OHanlon

            He should start off on learning to dance the salsa before moving onto the lambada.

            "WPF has many lovers. It's a veritable porn star!" - Josh Smith

            As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

            My blog | My articles | MoXAML PowerToys | Onyx

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            Chris Meech
            wrote on last edited by
            #15

            :-D

            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]

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            • J J Dunlap

              No, you don't *have* to, but they're extremely useful and I'd highly recommend it. I wrote an article to help out with the learning process: Lambda Expressions and Expression Trees: An Introduction[^] </shameless-plug> Also check out extension methods because a lot of the places where lambdas are used involve extension methods as well. (Whoa, that's cool! :omg: I pasted the link to my article and it automatically put in the link with the article's title! Good work Chris and co! :cool: )

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              Shelby Robertson
              wrote on last edited by
              #16

              J. Dunlap wrote:

              Also check out extension methods because a lot of the places where lambdas are used involve extension methods as well.

              Good call. My most frequent use of lambdas are with extension methods for collections to do things like Where, Select, Sorting, etc.

              Ennis Ray Lynch, Jr. wrote:

              Unpaid overtime is slavery.

              Trollslayer wrote:

              Meetings - where minutes are taken and hours are lost.

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              • P Pete OHanlon

                Errm - they aren't just for C#, and no you don't. You could just continue coding with gotos and monolithic procedures if you really wanted to. After all, who needs these fancy, schmancy features? Productivity is for wimps after all.

                "WPF has many lovers. It's a veritable porn star!" - Josh Smith

                As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

                My blog | My articles | MoXAML PowerToys | Onyx

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                Brady Kelly
                wrote on last edited by
                #17

                And unprofessional coders.  Never forget the large proportion of progressive and educated development professionals that churn out unprofessional code when they fall prey to these Satanic and Lazy constructs that have only recently been accommodated in the most Utopian language and runtime that is C# 3.0 on .NET Framework 3.5.  OK, that felt a bit like little boy scouts probably felt when they held Nazi banners up high for visiting diplomats and politicians.

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                • J Jorgen Sigvardsson

                  Yes, unless you have something against expressive and easy to follow code...

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                  Brady Kelly
                  wrote on last edited by
                  #18

                  Oh, heathen!  What is wrong with redundantly declared (non-)anonymous methods, used in shelf-operations like "Distinct".  Oh the code. it haunts me so not having to rewrite an debug it, but I'm not a professional coder, so I must either get used to debugging boilerplate, or shape up and stop rewriting code with spelling and typing mistakes.  I mean, I had the logic correct all the time, but these little agents of the Dark One keep throwing magnetic spanners in my freaking production line for "Real Life Output".

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                  • S Shelby Robertson

                    J. Dunlap wrote:

                    Also check out extension methods because a lot of the places where lambdas are used involve extension methods as well.

                    Good call. My most frequent use of lambdas are with extension methods for collections to do things like Where, Select, Sorting, etc.

                    Ennis Ray Lynch, Jr. wrote:

                    Unpaid overtime is slavery.

                    Trollslayer wrote:

                    Meetings - where minutes are taken and hours are lost.

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                    B Offline
                    Brady Kelly
                    wrote on last edited by
                    #19

                    This whole extension method, new-fangled thang is more dangerous than gay marriage!  Vote to stop it before it gets to your youth. :suss: Thatv was a lot easier to squeeze in that a programming post. :laugh:

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                    • P Pete OHanlon

                      He should start off on learning to dance the salsa before moving onto the lambada.

                      "WPF has many lovers. It's a veritable porn star!" - Josh Smith

                      As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

                      My blog | My articles | MoXAML PowerToys | Onyx

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                      Chris Losinger
                      wrote on last edited by
                      #20

                      tonight we will use the lambda, the forbidden construct !

                      image processing toolkits | batch image processing

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                      • K keencomputer

                        Do I really need to learn this C# 3’s lambda whatever...........

                        Tapas Shome System Software Engineer Keen Computer Solutions 1408 Erin Street Winnipeg, Manitoba Canada R3E 2S8 http://www.keencomputer.com www.ias-research.com/blog

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                        Chris Austin
                        wrote on last edited by
                        #21

                        Probably not...but I've been using lambdas in different languages for about a decade now and it is pretty darn handy at times. Right tool for the job and what not.

                        And above all things, never think that you're not good enough yourself. A man should never think that. My belief is that in life people will take you at your own reckoning. --Isaac Asimov Avoid the crowd. Do your own thinking independently. Be the chess player, not the chess piece. --Ralph Charell

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                        • K keencomputer

                          Do I really need to learn this C# 3’s lambda whatever...........

                          Tapas Shome System Software Engineer Keen Computer Solutions 1408 Erin Street Winnipeg, Manitoba Canada R3E 2S8 http://www.keencomputer.com www.ias-research.com/blog

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                          Super Lloyd
                          wrote on last edited by
                          #22

                          God No! But if you ever learn it accidentally you will be surprised by how easy and useful it is and you will regret not having learn it before!

                          A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station.... _________________________________________________________ My programs never have bugs, they just develop random features.

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                          • D Dario Solera

                            Once you get them, they're totally, absolutely awesome. Besides that, it only really takes 10 minutes.

                            If you truly believe you need to pick a mobile phone that "says something" about your personality, don't bother. You don't have a personality. A mental illness, maybe - but not a personality. - Charlie Brooker My Photos/CP Flickr Group - ScrewTurn Wiki v3

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                            bryce
                            wrote on last edited by
                            #23

                            explain then to us :) Bryce

                            MCAD --- To paraphrase Fred Dagg - the views expressed in this post are bloody good ones. --
                            Publitor, making Pubmed easy. http://www.sohocode.com/publitor

                            Our kids books :The Snot Goblin, and Book 2 - the Snotgoblin and Fluff

                            1 Reply Last reply
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                            • P Pete OHanlon

                              Errm - they aren't just for C#, and no you don't. You could just continue coding with gotos and monolithic procedures if you really wanted to. After all, who needs these fancy, schmancy features? Productivity is for wimps after all.

                              "WPF has many lovers. It's a veritable porn star!" - Josh Smith

                              As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

                              My blog | My articles | MoXAML PowerToys | Onyx

                              K Offline
                              K Offline
                              keozcigisoft
                              wrote on last edited by
                              #24

                              ROFL! Absolutely :laugh:

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                              • K keencomputer

                                Do I really need to learn this C# 3’s lambda whatever...........

                                Tapas Shome System Software Engineer Keen Computer Solutions 1408 Erin Street Winnipeg, Manitoba Canada R3E 2S8 http://www.keencomputer.com www.ias-research.com/blog

                                K Offline
                                K Offline
                                keozcigisoft
                                wrote on last edited by
                                #25

                                It's C# 4.0 already and you are asking what has become an everyday tool :S

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                                • K keencomputer

                                  Do I really need to learn this C# 3’s lambda whatever...........

                                  Tapas Shome System Software Engineer Keen Computer Solutions 1408 Erin Street Winnipeg, Manitoba Canada R3E 2S8 http://www.keencomputer.com www.ias-research.com/blog

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                                  msusur
                                  wrote on last edited by
                                  #26

                                  Yeah you need to! As Dario said, it should have only 10 minutes to learn it. If you had start learning it instead of asking here you have already learnt it.

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                                  • P Pete OHanlon

                                    Errm - they aren't just for C#, and no you don't. You could just continue coding with gotos and monolithic procedures if you really wanted to. After all, who needs these fancy, schmancy features? Productivity is for wimps after all.

                                    "WPF has many lovers. It's a veritable porn star!" - Josh Smith

                                    As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

                                    My blog | My articles | MoXAML PowerToys | Onyx

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                                    Adriaan Davel
                                    wrote on last edited by
                                    #27

                                    Pete O'Hanlon wrote:

                                    Productivity is for wimps after all.

                                    Spoken like a true Klingon

                                    ____________________________________________________________ Be brave little warrior, be VERY brave

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                                    • M MidwestLimey

                                      Unless, of course, he never used anonymous methods either ....

                                      10110011001111101010101000001000001101001010001010100000100000101000001000111100010110001011001011

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                                      thedavejay
                                      wrote on last edited by
                                      #28

                                      Yes, Lambda is important to learn. From what I have seen, people are starting to move more towards functional programming. Its also important to learn to utilize the generic delegates Action<> and Func<>, anonymous methods using lambda expressions (all important parts to functional programming).

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                                      • K keencomputer

                                        Do I really need to learn this C# 3’s lambda whatever...........

                                        Tapas Shome System Software Engineer Keen Computer Solutions 1408 Erin Street Winnipeg, Manitoba Canada R3E 2S8 http://www.keencomputer.com www.ias-research.com/blog

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                                        ScottM1
                                        wrote on last edited by
                                        #29

                                        keencomputer wrote:

                                        Keen Computer Solutions

                                        You don't seem that keen. ;P

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                                        • C Chris Meech

                                          Absolutely. Become a good shepherd and learn all about lambs, ... Oh my bad. You said lambda. Sorry. :)

                                          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]

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                                          Gary Wheeler
                                          wrote on last edited by
                                          #30

                                          It puts the lotion on its skin or it gets the hose again...

                                          Software Zen: delete this;

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