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C++ trivia

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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

    H 1 Reply Last reply
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    • C Chris Losinger

      also bitfield definitions

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

      Thanks. I knew i was forgetting something!

      Real programmers use butterflies

      1 Reply Last reply
      0
      • 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
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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
          #10

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

          Real programmers use butterflies

          T 1 Reply Last reply
          0
          • 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

                    H Offline
                    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

                    H 1 Reply Last reply
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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";

                      H 1 Reply Last reply
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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
                          0
                          • 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[^]

                                H 1 Reply Last reply
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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

                                  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

                                    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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                                    • S scedastic

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

                                      H Offline
                                      H Offline
                                      honey the codewitch
                                      wrote on last edited by
                                      #24

                                      i did, because of the way the original question was worded.

                                      Real programmers use butterflies

                                      1 Reply Last reply
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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.

                                        P Offline
                                        P Offline
                                        progammer4you
                                        wrote on last edited by
                                        #25

                                        Hi. I would like to help with the answer to your question. First, one colon is used to indicate the base class when inheriting from classes. Second, a single colon is used to specify the initialization list for the constructor. The two colons are the scoping operator.
                                        Used to access the elements of the namespace. But in this matter, the editors of this site are more competent. Read more here: [url=https://sirinsoftware.com/services/iot-development/\]https://sirinsoftware.com/services/iot-development/\[/url\]

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