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calling a static function

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  • M Mark Salsbery

    You can call a static method of a class from other cpp files! You need to link the files however. The problem is in your project - the linker isn't finding the file with the function being called. Fix that and it will work. The two files in your example ARE in the same project, right?

    Mark Salsbery Microsoft MVP - Visual C++ :java:

    S Offline
    S Offline
    steph5
    wrote on last edited by
    #18

    yes all the files are incluceded in the same project. how do I make sure the linker finds the file? The thing is I can call myClass::myFunction() from one of the .cpp files in the project, but I can't call it from another .cpp file in the same project. whats going on? Thanks for your time

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    0
    • CPalliniC CPallini

      Nope. ;)

      If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
      This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
      [My articles]

      T Offline
      T Offline
      toxcct
      wrote on last edited by
      #19

      you're saying this as if such construction never exists... but I'm sure it is ! for example, the following is perfectly valid : "If I were you, I wouldn't do that"... ;P

      [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

      M CPalliniC 2 Replies Last reply
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      • M Mark Salsbery

        toxcct wrote:

        not a native english speaker (like you)

        LOL! I'm pretty sure the rest of the world doesn't call what we Americans speak "English" ;P

        Mark Salsbery Microsoft MVP - Visual C++ :java:

        J Offline
        J Offline
        john john mackey
        wrote on last edited by
        #20

        touché :laugh:

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        • T toxcct

          you're saying this as if such construction never exists... but I'm sure it is ! for example, the following is perfectly valid : "If I were you, I wouldn't do that"... ;P

          [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

          M Offline
          M Offline
          Mark Salsbery
          wrote on last edited by
          #21

          Hey tox (aka Grammar Nazi)... Shouldn't you be busy working on this?[^] ;P

          Mark Salsbery Microsoft MVP - Visual C++ :java:

          T 1 Reply Last reply
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          • M Mark Salsbery

            CPallini wrote:

            That's true.

            Huh? I call static methods that aren't in the same source file all the time :)

            Mark Salsbery Microsoft MVP - Visual C++ :java:

            CPalliniC Offline
            CPalliniC Offline
            CPallini
            wrote on last edited by
            #22

            Actually his sentence,

            steph5 wrote:

            I was in the understanding that if you declare a static function it can only be called from the source file where it is declared.

            and yours

            Mark Salsbery wrote:

            Huh? I call static methods that aren't in the same source file all the time

            are not in conflict: standard (i.e C-like, not belonging to a class) static functions have file scope, while static methods have not such a constraint. :)

            If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
            This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
            [My articles]

            In testa che avete, signor di Ceprano?

            T M 2 Replies Last reply
            0
            • M Mark Salsbery

              Hey tox (aka Grammar Nazi)... Shouldn't you be busy working on this?[^] ;P

              Mark Salsbery Microsoft MVP - Visual C++ :java:

              T Offline
              T Offline
              toxcct
              wrote on last edited by
              #23

              Mark, wait. I didn't say all I write is gramatically correct; I make mistakes sometimes. BUT, isn't the construction I just asked you in this thread valid ?

              [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

              M 2 Replies Last reply
              0
              • CPalliniC CPallini

                Actually his sentence,

                steph5 wrote:

                I was in the understanding that if you declare a static function it can only be called from the source file where it is declared.

                and yours

                Mark Salsbery wrote:

                Huh? I call static methods that aren't in the same source file all the time

                are not in conflict: standard (i.e C-like, not belonging to a class) static functions have file scope, while static methods have not such a constraint. :)

                If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                [My articles]

                T Offline
                T Offline
                toxcct
                wrote on last edited by
                #24

                CPallini wrote:

                while static methods

                C++ (actually Bjarne Stroustrup) don't talk about methods (which is more correct to Java/C#), but talks about member variables and member functions.

                [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                CPalliniC 1 Reply Last reply
                0
                • T toxcct

                  Mark, wait. I didn't say all I write is gramatically correct; I make mistakes sometimes. BUT, isn't the construction I just asked you in this thread valid ?

                  [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                  M Offline
                  M Offline
                  Mark Salsbery
                  wrote on last edited by
                  #25

                  I'm just goofin with you here, of course.

                  toxcct wrote:

                  isn't the construction I just asked you in this thread valid ?

                  Where at? I missed something somewhere :)

                  Mark Salsbery Microsoft MVP - Visual C++ :java:

                  1 Reply Last reply
                  0
                  • T toxcct

                    you're saying this as if such construction never exists... but I'm sure it is ! for example, the following is perfectly valid : "If I were you, I wouldn't do that"... ;P

                    [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                    CPalliniC Offline
                    CPalliniC Offline
                    CPallini
                    wrote on last edited by
                    #26

                    And you're right [^]. Anyway it looks like 'wish' is needed in the sentence. Anyway I'm a poor Italian man... :-D

                    If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                    This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                    [My articles]

                    In testa che avete, signor di Ceprano?

                    1 Reply Last reply
                    0
                    • CPalliniC CPallini

                      Actually his sentence,

                      steph5 wrote:

                      I was in the understanding that if you declare a static function it can only be called from the source file where it is declared.

                      and yours

                      Mark Salsbery wrote:

                      Huh? I call static methods that aren't in the same source file all the time

                      are not in conflict: standard (i.e C-like, not belonging to a class) static functions have file scope, while static methods have not such a constraint. :)

                      If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                      This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                      [My articles]

                      M Offline
                      M Offline
                      Mark Salsbery
                      wrote on last edited by
                      #27

                      I stand corrected! :) And I'm not the one that voted you down! Cheers!

                      Mark Salsbery Microsoft MVP - Visual C++ :java:

                      CPalliniC 1 Reply Last reply
                      0
                      • T toxcct

                        CPallini wrote:

                        while static methods

                        C++ (actually Bjarne Stroustrup) don't talk about methods (which is more correct to Java/C#), but talks about member variables and member functions.

                        [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                        CPalliniC Offline
                        CPalliniC Offline
                        CPallini
                        wrote on last edited by
                        #28

                        OOP talks about methods. C++ use its own jargon to name the same entity. :)

                        If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                        This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                        [My articles]

                        In testa che avete, signor di Ceprano?

                        1 Reply Last reply
                        0
                        • M Mark Salsbery

                          I stand corrected! :) And I'm not the one that voted you down! Cheers!

                          Mark Salsbery Microsoft MVP - Visual C++ :java:

                          CPalliniC Offline
                          CPalliniC Offline
                          CPallini
                          wrote on last edited by
                          #29

                          Mark Salsbery wrote:

                          I stand corrected!

                          did you ever doubt if? ;P

                          Mark Salsbery wrote:

                          And I'm not the one that voted you down!

                          No doubt about. BTW: no Kanine Crunchies for my troll this evening. :)

                          If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                          This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                          [My articles]

                          In testa che avete, signor di Ceprano?

                          M 1 Reply Last reply
                          0
                          • T toxcct

                            Mark, wait. I didn't say all I write is gramatically correct; I make mistakes sometimes. BUT, isn't the construction I just asked you in this thread valid ?

                            [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                            M Offline
                            M Offline
                            Mark Salsbery
                            wrote on last edited by
                            #30

                            I see it now sorry :) Yeah you are right I think. The more I say both versions, yours sounds better. And using "was" implies past tense which seems silly. :beer:

                            Mark Salsbery Microsoft MVP - Visual C++ :java:

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                            0
                            • CPalliniC CPallini

                              Mark Salsbery wrote:

                              I stand corrected!

                              did you ever doubt if? ;P

                              Mark Salsbery wrote:

                              And I'm not the one that voted you down!

                              No doubt about. BTW: no Kanine Crunchies for my troll this evening. :)

                              If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                              This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                              [My articles]

                              M Offline
                              M Offline
                              Mark Salsbery
                              wrote on last edited by
                              #31

                              CPallini wrote:

                              Kanine Crunchies

                              Now I'm hungry! :-D

                              Mark Salsbery Microsoft MVP - Visual C++ :java:

                              1 Reply Last reply
                              0
                              • CPalliniC CPallini

                                steph5 wrote:

                                I was in the understanding that if you declare a static function it can only be called from the source file where it is declared.

                                That's true.

                                steph5 wrote:

                                Am I missing something??

                                Yes: in

                                steph5 wrote:

                                class myClass { static void myFunction }

                                is not an ordinary (i.e. C-style) static function, is a static method (i.e is a member of the class even if you don't need an instance of the class to call it). :)

                                If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                                This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                                [My articles]

                                R Offline
                                R Offline
                                Rajesh R Subramanian
                                wrote on last edited by
                                #32

                                :suss: Why the low vote? Someone had a bad day. Perhaps. here[^] as well.

                                Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche .·´¯`·->Rajesh<-·´¯`·. [Microsoft MVP - Visual C++]

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