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C++ trivia

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  • Greg UtasG Greg Utas

    List the distinct uses for a colon in C++. Motivated by currently writing a function that had better take all of them into account! :-D

    Robust Services Core | Software Techniques for Lemmings | Articles
    The fox knows many things, but the hedgehog knows one big thing.

    D Offline
    D Offline
    DRHuff
    wrote on last edited by
    #4

    A colon is the hat that most Q&A questioners wear. :-D

    If you can't laugh at yourself - ask me and I will do it for you.

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    • Greg UtasG Greg Utas

      List the distinct uses for a colon in C++. Motivated by currently writing a function that had better take all of them into account! :-D

      Robust Services Core | Software Techniques for Lemmings | Articles
      The fox knows many things, but the hedgehog knows one big thing.

      D Offline
      D Offline
      den2k88
      wrote on last edited by
      #5

      It's the brits fault, they colonized even C++.

      GCS d--(d+) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++*      Weapons extension: ma- k++ F+2 X

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      • Greg UtasG Greg Utas

        List the distinct uses for a colon in C++. Motivated by currently writing a function that had better take all of them into account! :-D

        Robust Services Core | Software Techniques for Lemmings | Articles
        The fox knows many things, but the hedgehog knows one big thing.

        H Offline
        H Offline
        honey the codewitch
        wrote on last edited by
        #6

        static member access, constructor initialization list. Base class list, namespace access, ternary operator, case signifier terminator. I feel like there are more but I'm sleepy. edit: other commenters pointed out labels and bitfields Don't forget to escape strings and chars!

        Real programmers use butterflies

        C D J S 4 Replies Last reply
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        • H honey the codewitch

          static member access, constructor initialization list. Base class list, namespace access, ternary operator, case signifier terminator. I feel like there are more but I'm sleepy. edit: other commenters pointed out labels and bitfields Don't forget to escape strings and chars!

          Real programmers use butterflies

          C Offline
          C Offline
          Chris Losinger
          wrote on last edited by
          #7

          also bitfield definitions

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          • D DRHuff

            goto the head of the class!

            If you can't laugh at yourself - ask me and I will do it for you.

            H Offline
            H Offline
            honey the codewitch
            wrote on last edited by
            #8

            i forgot labels. So now that's two things i forgot

            Real programmers use butterflies

            T 1 Reply Last reply
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            • H honey the codewitch

              static member access, constructor initialization list. Base class list, namespace access, ternary operator, case signifier terminator. I feel like there are more but I'm sleepy. edit: other commenters pointed out labels and bitfields Don't forget to escape strings and chars!

              Real programmers use butterflies

              D Offline
              D Offline
              DRHuff
              wrote on last edited by
              #9

              goto the head of the class!

              If you can't laugh at yourself - ask me and I will do it for you.

              H 1 Reply Last reply
              0
              • C Chris Losinger

                also bitfield definitions

                H Offline
                H Offline
                honey the codewitch
                wrote on last edited by
                #10

                Thanks. I knew i was forgetting something!

                Real programmers use butterflies

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                • W W Balboos GHB

                  Just to be on the safe side, be sure to consider this is the most distinct use of the colon.[^]

                  Ravings en masse^

                  "The difference between genius and stupidity is that genius has its limits." - Albert Einstein

                  "If you are searching for perfection in others, then you seek disappointment. If you seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010

                  Greg UtasG Offline
                  Greg UtasG Offline
                  Greg Utas
                  wrote on last edited by
                  #11

                  Now why would I be hesitating to click on that link? :-D EDIT: Curiosity killed the cat. But it could have been worse!

                  Robust Services Core | Software Techniques for Lemmings | Articles
                  The fox knows many things, but the hedgehog knows one big thing.

                  <p><a href="https://github.com/GregUtas/robust-services-core/blob/master/README.md">Robust Services Core</a>
                  <em>The fox knows many things, but the hedgehog knows one big thing.</em></p>

                  W 1 Reply Last reply
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                  • Greg UtasG Greg Utas

                    Now why would I be hesitating to click on that link? :-D EDIT: Curiosity killed the cat. But it could have been worse!

                    Robust Services Core | Software Techniques for Lemmings | Articles
                    The fox knows many things, but the hedgehog knows one big thing.

                    W Offline
                    W Offline
                    W Balboos GHB
                    wrote on last edited by
                    #12

                    Greg Utas wrote:

                    Now why would I be hesitating to click on that link?

                    Answer I'd have given: Hesitant? Perhaps not enough roughage?

                    Ravings en masse^

                    "The difference between genius and stupidity is that genius has its limits." - Albert Einstein

                    "If you are searching for perfection in others, then you seek disappointment. If you seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010

                    1 Reply Last reply
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                    • W W Balboos GHB

                      Just to be on the safe side, be sure to consider this is the most distinct use of the colon.[^]

                      Ravings en masse^

                      "The difference between genius and stupidity is that genius has its limits." - Albert Einstein

                      "If you are searching for perfection in others, then you seek disappointment. If you seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010

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

                      I was going to say, "to write VB code because only ... " but he beat me too it ... :-D

                      "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 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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                      • H honey the codewitch

                        i forgot labels. So now that's two things i forgot

                        Real programmers use butterflies

                        T Offline
                        T Offline
                        TheGreatAndPowerfulOz
                        wrote on last edited by
                        #14

                        global scope operator, as in ::foo

                        #SupportHeForShe Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun

                        H 1 Reply Last reply
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                        • T TheGreatAndPowerfulOz

                          global scope operator, as in ::foo

                          #SupportHeForShe Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun

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                          H Offline
                          honey the codewitch
                          wrote on last edited by
                          #15

                          I presumed that was implied when i mentioned the namespace scope resolution operator (it's the same operator) :)

                          Real programmers use butterflies

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                          • H honey the codewitch

                            I presumed that was implied when i mentioned the namespace scope resolution operator (it's the same operator) :)

                            Real programmers use butterflies

                            H Offline
                            H Offline
                            Helena Munzarova
                            wrote on last edited by
                            #16

                            In a ternary oparator

                            sResult=(x<=0)?"0 or negative":"positive";

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                            • Greg UtasG Greg Utas

                              List the distinct uses for a colon in C++. Motivated by currently writing a function that had better take all of them into account! :-D

                              Robust Services Core | Software Techniques for Lemmings | Articles
                              The fox knows many things, but the hedgehog knows one big thing.

                              G Offline
                              G Offline
                              Gary Wheeler
                              wrote on last edited by
                              #17

                              To keep my gastroenterologist in BMW's? Oh wait, wrong colon; my bad.

                              Software Zen: delete this;

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                              • H honey the codewitch

                                static member access, constructor initialization list. Base class list, namespace access, ternary operator, case signifier terminator. I feel like there are more but I'm sleepy. edit: other commenters pointed out labels and bitfields Don't forget to escape strings and chars!

                                Real programmers use butterflies

                                J Offline
                                J Offline
                                jason_s_coleman
                                wrote on last edited by
                                #18

                                Range-based for loop?

                                H 1 Reply Last reply
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                                • H Helena Munzarova

                                  In a ternary oparator

                                  sResult=(x<=0)?"0 or negative":"positive";

                                  H Offline
                                  H Offline
                                  honey the codewitch
                                  wrote on last edited by
                                  #19

                                  i already mentioned that.

                                  Real programmers use butterflies

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                                  • J jason_s_coleman

                                    Range-based for loop?

                                    H Offline
                                    H Offline
                                    honey the codewitch
                                    wrote on last edited by
                                    #20

                                    is that a C++20 thing?

                                    Real programmers use butterflies

                                    J 1 Reply Last reply
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                                    • H honey the codewitch

                                      is that a C++20 thing?

                                      Real programmers use butterflies

                                      J Offline
                                      J Offline
                                      jason_s_coleman
                                      wrote on last edited by
                                      #21

                                      Nah, looks like C++11. e.g. for (auto it : vector) Range-based for loop (since C++11) - cppreference.com[^]

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                                      • J jason_s_coleman

                                        Nah, looks like C++11. e.g. for (auto it : vector) Range-based for loop (since C++11) - cppreference.com[^]

                                        H Offline
                                        H Offline
                                        honey the codewitch
                                        wrote on last edited by
                                        #22

                                        huh. I've never actually used that..

                                        Real programmers use butterflies

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                                        • H honey the codewitch

                                          static member access, constructor initialization list. Base class list, namespace access, ternary operator, case signifier terminator. I feel like there are more but I'm sleepy. edit: other commenters pointed out labels and bitfields Don't forget to escape strings and chars!

                                          Real programmers use butterflies

                                          S Offline
                                          S Offline
                                          scedastic
                                          wrote on last edited by
                                          #23

                                          Some of those are double colons. Are we counting them as well?

                                          H 1 Reply Last reply
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