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  3. how many times in your life have you implemented recursive methods

how many times in your life have you implemented recursive methods

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  • V Vasily Tserekh

    I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #4

    Often enough, they come in handy when working with trees and graphs*, but of course I didn't have to, I might just as easily have written them with an explicit stack. They are, of course, not the holy grail of programming. * contrary to popular belief, they actually are used outside of academia.

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    • V Vasily Tserekh

      I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

      D Offline
      D Offline
      DaveAuld
      wrote on last edited by
      #5

      Good question, check out the thread here[^].

      Dave Find Me On: Web|Facebook|Twitter|LinkedIn


      Folding Stats: Team CodeProject

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      • V Vasily Tserekh

        I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

        L Offline
        L Offline
        lewax00
        wrote on last edited by
        #6

        I've done it a few times...but who really needs to learn about them are the people who write the instructions on shampoo. I get stuck doing lather, rinse, repeat until I stack overflow because they forgot an end condition...

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        • C Chris Losinger

          not many. a dozen maybe. but it's good to know how to do it. when the situation arises and you need to get recursive, it helps to have done it before, because it can be a little tough to get your head around it sometimes.

          image processing toolkits | batch image processing

          G Offline
          G Offline
          gavindon
          wrote on last edited by
          #7

          Chris Losinger wrote:

          it helps to have done it before, because it can be a little tough to get your head around it sometimes.

          I agree, I still remember the smoke coming out of my classmates ears the section we were doing recursion in c++. course, come to think of it these were the same guys that responded with an answer of a "if" when asked what kind of loop they would use in "x" situation....... :doh: Thought my poor instructor was going to have a stroke on the spot. This was not in the beginning course either, it was in data structures. (3rd course in c++ for us, beginner, advanced, then data struct.).

          Common sense is not a gift it's a curse. Those of us who have it have to deal with those that don't.... Be careful which toes you step on today, they might be connected to the foot that kicks your butt tomorrow. You can't scare me, I have children.

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          • realJSOPR realJSOP

            It seems like I do it over and over again... JSOP's Recursive Rule of Recursion: "No matter where you are, that's where you're at."

            ".45 ACP - because shooting twice is just silly" - JSOP, 2010
            -----
            You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
            -----
            "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass." - Dale Earnhardt, 1997

            Mike HankeyM Offline
            Mike HankeyM Offline
            Mike Hankey
            wrote on last edited by
            #8

            Where ever you go, there you are.

            VS2010/Atmel Studio 6.0 ToDo Manager Extension
            Version 3.0 now available. There is no place like 127.0.0.1

            D realJSOPR 2 Replies Last reply
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            • V Vasily Tserekh

              I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

              Mike HankeyM Offline
              Mike HankeyM Offline
              Mike Hankey
              wrote on last edited by
              #9

              Quite often, recursion is very handy.

              VS2010/Atmel Studio 6.0 ToDo Manager Extension
              Version 3.0 now available. There is no place like 127.0.0.1

              R 1 Reply Last reply
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              • Mike HankeyM Mike Hankey

                Where ever you go, there you are.

                VS2010/Atmel Studio 6.0 ToDo Manager Extension
                Version 3.0 now available. There is no place like 127.0.0.1

                D Offline
                D Offline
                Dr Walt Fair PE
                wrote on last edited by
                #10

                When you go back, it's deja vu all over again.

                CQ de W5ALT

                Walt Fair, Jr., P. E. Comport Computing Specializing in Technical Engineering Software

                R Mike HankeyM 2 Replies Last reply
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                • V Vasily Tserekh

                  I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

                  D Offline
                  D Offline
                  Dr Walt Fair PE
                  wrote on last edited by
                  #11

                  Lots!! If you use Prolog or any of the functional languages, it's extremely useful, fast and efficient to use (tail) recursion. In fact, I can hardly imagine programming anything in those languages without recursion.

                  CQ de W5ALT

                  Walt Fair, Jr., P. E. Comport Computing Specializing in Technical Engineering Software

                  V 1 Reply Last reply
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                  • D DaveAuld

                    Good question, check out the thread here[^].

                    Dave Find Me On: Web|Facebook|Twitter|LinkedIn


                    Folding Stats: Team CodeProject

                    V Offline
                    V Offline
                    Vasily Tserekh
                    wrote on last edited by
                    #12

                    ahahaha , that was a very good joke I understood it when I clicled at the link nice man!!

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                    • L lewax00

                      I've done it a few times...but who really needs to learn about them are the people who write the instructions on shampoo. I get stuck doing lather, rinse, repeat until I stack overflow because they forgot an end condition...

                      A Offline
                      A Offline
                      AspDotNetDev
                      wrote on last edited by
                      #13

                      if (head.IsBloodyAndHairIsScrubbedOff) return BaseCase.Reached;

                      Thou mewling ill-breeding pignut!

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                      • V Vasily Tserekh

                        I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

                        S Offline
                        S Offline
                        Steve Mayfield
                        wrote on last edited by
                        #14

                        Just make sure you get paid for number of lines executed instead of number of lines written! :thumbsup:

                        Steve _________________ I C(++) therefore I am

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                        • V Vasily Tserekh

                          I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

                          A Offline
                          A Offline
                          AspDotNetDev
                          wrote on last edited by
                          #15

                          I imagine some developers come across recursion more often than others. For example, I sometimes deal with recursion when writing code that traverses the file system, but I don't do that very often. Video game developers might do it when they handle BSP, closest path algorithms, collision detection, and so on. And just because you don't use it often does not mean it's not incredibly useful. Some problems might seem insurmountable without recursion. You might also seldom use trigonometry, but when you need it you really need it.

                          Thou mewling ill-breeding pignut!

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                          • D Dr Walt Fair PE

                            When you go back, it's deja vu all over again.

                            CQ de W5ALT

                            Walt Fair, Jr., P. E. Comport Computing Specializing in Technical Engineering Software

                            R Offline
                            R Offline
                            Ravi Bhavnani
                            wrote on last edited by
                            #16

                            That reminds me... /ravi

                            My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

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                            • D Dr Walt Fair PE

                              Lots!! If you use Prolog or any of the functional languages, it's extremely useful, fast and efficient to use (tail) recursion. In fact, I can hardly imagine programming anything in those languages without recursion.

                              CQ de W5ALT

                              Walt Fair, Jr., P. E. Comport Computing Specializing in Technical Engineering Software

                              V Offline
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                              Vasily Tserekh
                              wrote on last edited by
                              #17

                              Hate prolog at so many levels that I thank god I dont need to use it in my normal life

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                              • D Dr Walt Fair PE

                                When you go back, it's deja vu all over again.

                                CQ de W5ALT

                                Walt Fair, Jr., P. E. Comport Computing Specializing in Technical Engineering Software

                                Mike HankeyM Offline
                                Mike HankeyM Offline
                                Mike Hankey
                                wrote on last edited by
                                #18

                                In my case it's veja du. Someplace I've never been and never want to go!

                                VS2010/Atmel Studio 6.0 ToDo Manager Extension
                                Version 3.0 now available. There is no place like 127.0.0.1

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                                • A AspDotNetDev

                                  I imagine some developers come across recursion more often than others. For example, I sometimes deal with recursion when writing code that traverses the file system, but I don't do that very often. Video game developers might do it when they handle BSP, closest path algorithms, collision detection, and so on. And just because you don't use it often does not mean it's not incredibly useful. Some problems might seem insurmountable without recursion. You might also seldom use trigonometry, but when you need it you really need it.

                                  Thou mewling ill-breeding pignut!

                                  L Offline
                                  L Offline
                                  lewax00
                                  wrote on last edited by
                                  #19

                                  Linear algebra is another one. Don't use it at all for most things, but good luck doing 3D graphics without it. It's good to have a varied tool kit, just in case.

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                                  • Mike HankeyM Mike Hankey

                                    Where ever you go, there you are.

                                    VS2010/Atmel Studio 6.0 ToDo Manager Extension
                                    Version 3.0 now available. There is no place like 127.0.0.1

                                    realJSOPR Online
                                    realJSOPR Online
                                    realJSOP
                                    wrote on last edited by
                                    #20

                                    I feel more like I do now than I did a while ago.

                                    ".45 ACP - because shooting twice is just silly" - JSOP, 2010
                                    -----
                                    You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
                                    -----
                                    "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass." - Dale Earnhardt, 1997

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                                    • V Vasily Tserekh

                                      I can count with the fingers of my hand the times I had to implement recursive methods in my life, so what was the fuzz all about when you are in school ant programming teachers tell you that that is the holy grail of programming!!! ps: i know that is important but most of recursive functions are implememnted and you only have to use them.

                                      L Offline
                                      L Offline
                                      Lost User
                                      wrote on last edited by
                                      #21

                                      Vasily Tserekh wrote:

                                      I can count with the fingers of my hand the times I had to implement recursive methods in my life

                                      You're twenty? :) I ran out of fingers at my first employer.

                                      Bastard Programmer from Hell :suss:

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                                      • L lewax00

                                        Linear algebra is another one. Don't use it at all for most things, but good luck doing 3D graphics without it. It's good to have a varied tool kit, just in case.

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                                        AspDotNetDev
                                        wrote on last edited by
                                        #22

                                        I don't get to use that very often, as I took a class called "Linear Algebra" in college and now I have no idea what linear algebra is. :)

                                        Thou mewling ill-breeding pignut!

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                                        • A AspDotNetDev

                                          I don't get to use that very often, as I took a class called "Linear Algebra" in college and now I have no idea what linear algebra is. :)

                                          Thou mewling ill-breeding pignut!

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                                          L Offline
                                          lewax00
                                          wrote on last edited by
                                          #23

                                          Well the name makes no sense to me (I guess its because it has to do with linear systems or something like that) but that's the one with the matrices. Very necessary for 3D applications. But most apps aren't 3D, and outside of that and scientific simulation I don't think it gets used for anything.

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