KDevelop5/Handbuch/Was ist KDevelop?

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    Revision as of 07:22, 27 August 2017 by Claus chr (talk | contribs) (Created page with "{{Input|<syntaxhighlight lang="cpp"> Car my_ride; // ... mache etwas mit dieser Variable ... std::string color = my_ride.ge </syntaxhighlight>}}")


    Was ist KDevelop?

    KDevelop ist eine moderne integrierte Entwicklungsumgebung (IDE) für C++ (und andere Sprachen) und teil der zahlreichen KDE-Anwendungen. Als solche läuft es unter Linux (selbst wenn Sie einen der anderen Desktops wie Gnome verwenden) aber auch unter den meisten anderen Unix-Varianten und unter Windows.


    KDevelop liefert alle Vorzüge moderner IDEs. Für große Projekte und Anwendungen ist die wichtigste Tatsache, dass KDevelop C++ versteht: Es durchsucht den gesamten Quelltext und merkt sich, welche Klasse welche Funktionen hat, wo Variablen definiert sind, was deren Typen sind und viele andere Dinge in Ihrem Quelltext. Nehmen wir zum Beispiel an, dass eine Header-Datei in Ihrem Projekt folgende Klasse deklariert


    class Car {
      // ...
      public:
        std::string get_color () const;
    };
    


    und später in Ihrem Programm haben Sie dann


    Car my_ride;
    // ... mache etwas mit dieser Variable ...
    std::string color = my_ride.ge
    


    it will have remembered that my_ride in the last line is a variable of type Car and offer you to complete ge as get_color() since this is the only member function of the Car class that starts like this. Instead of continuing to type you just hit Enter to get the full word; this saves typing, avoids typos, and doesn't require you to remember the exact names of the hundreds or thousands of functions and classes that make up large projects.


    As a second example, assume you have code like this:


    double foo ()
    {
      double var = my_func();
      return var * var;
    }
    
    
    double bar ()
    {
      double var = my_func();
      return var * var * var;
    }
    


    If you hover the mouse over the symbol var in function bar you get the option to see all uses of this symbol. Clicking on it will only show you the uses of this variable in function bar because KDevelop understands that the variable var in function foo has nothing to do with it. Similarly, right clicking on the variable name allows you to rename the variable; doing so will only touch the variable in bar but not the one with the same name in foo.


    But KDevelop is not just an intelligent code editor; there are other things KDevelop does well. Obviously, it highlights the source code in different colors; it has a customizable indenter; it has an integrated interface to the GNU debugger gdb; it can show you the documentation for a function if you hover the mouse over a use of this function; it can deal with different kinds of build environments and compilers (e.g. with make and cmake-based project), and many other neat things that are discussed in this manual.