What you’re looking for is a bit strange, but one option to keep them static and provide new value/implementation is to just hide the inherited members, by simply using the same name: public abstract class Effect { public const float duration = 1.0f; public static void boo() { // this prints 1.0f Console.WriteLine(duration); } } … Read more
Yes, it is possible and it is what inheritance in Python does. As @deceze suggests, update the files like below: human_class.py: class human(): def __init__ (self, gender=””, age=0, height=0, howHigh=””): #setting attributes self.gender = “” self.age = 0 self.height = 0 self.howHigh = “” def setHeight(self): self.height = int(input(“What is your height in cm? “)) … Read more
I think you’re meaning to pass a method as parameter, so the method can execute it as a callback. You should pass a method (without the parenthesis) to the other class and It must match the Action<> definition. public partial class Form1 : Form { public void PaintGui(int percent) { Label1.Text = percent.ToString() + “% … Read more
For unit tests, you would typically use a unit-test framework such as CppUnit: For each class, you create a series of test; For each method to be tested, you develop a dedicated test; Each test verifies some assertions using functions or macros such as CPPUNIT_ASSERT, CPPUNIT_FAIL, CPPUNIT_ASSERT_THROW; It’s often useful to make the tester class … Read more
The first constructor: public Book(String bookname, String authorName) { mBookName = bookname; mAuthorName = authorName; mPageList = new ArrayList<>(); } Then you will have a new book without any page The second constructor: public Book(String bookname, String authorName, List<Page> pageList) { mBookName = bookname; mAuthorName = authorName; mPageList = pageList; } You will have a … Read more
You should create a model class for your records: Model Class class Record { private String item; private String category; private int quantity; private String timestamp // constructor public Record (String item, String category, int quantity, String timestamp) { this.item = item; // assign rest of members… } public String getCategory () { return category; … Read more
public int indexOf(Object o) { if (o == null) { for (int i = 0; i < size; i++) if (elementData[i]==null) return i; } else { for (int i = 0; i < size; i++) if (o.equals(elementData[i])) return i; } return -1; } This is actual method in Arraylist ,after reading i came to know … Read more
private prevents a variable from being accessed directly by another class. You cannot write d.x to read or write to x. If the class chooses to return a reference to x via a public method, though, that’s it’s own choice to pierce the veil of privacy. Nothing stops A from allowing x to be read … Read more
If I understand the problem correctly, you have 6 Publication objects, and you are only seeing the values of the most recently created one. That would likely be caused because you have static class variables instead of instance variables. For example class A { static int x; // class variable int y; // instance variable … Read more
Modern C++ treats structs and classes the same, the only difference is that structs default to public while classes default to private. They are basically collections of data with associated functionality. For example class Player { private: int health; int attack; public: void calculateHealth(int healthChange); } Enums are basically named numbers, for example: enum Months … Read more
It appears that what you want is for your Derived class to support the following interface: someInfo si; someMoreInfo smi; Base* pB = new Derived; // Setting info pB->setInfo(si); // Set the `Base::c` member of `*pB` pB->setInfo(smi); // Set the `Derived::g` member of `*pB` // Getting info someInfo pB_si = pB->getInfo(); // Get `Base::c` from … Read more
I think you almost answer your own question. Create a class-hierarchy with the “Animal”-interface as the top-node. I made an example of the hierarchy here. Also, inheritance and polymorphi is some of the essentials of OOP, so I don’t get your last sentence. solved about OOP and inherited classes
Yes you can do that but it would be better if you make the Males and Females into different classes and just inherit from the Human class. class Human: def __init__(self, height, weight): self.height = height self.weight = weight class Male(Human): def __init__(self, name): Human.__init__(self, height, weight) # This will inherit every attribute of the … Read more
Yes, you can have multiple: namespace A {}; namespace B {}; And nested: // Pre C++17 namespace A { namespace B {}; }; // C++ 17+ namespace A::B {}; solved Can we have more than one namespace in a library (in c++)
thanks to all…..the thing which i dont know was – during a function call if i want to pass an array(arr[]) as argument then i just need to pass its name(arr) as argument not the square brackets([]) along with it. Here is my new optimized error free code which has been submitted successfully. import java.util.*; … Read more