Follow your class and struct declarations with a semicolon. It’s there for declarations of variables of that type, and typedefs. 8 solved My C++ code is not working (for class declaration) [closed]
= is an assignment statement, you appear to be confusing this with a ==, the equality comparison operator. The statements are entirely different: self.name = name assigns the value referenced by the local variable name to the attribute name on the object referenced by self. It sets an attribute on the newly created instance, from … Read more
You should not attempt to call constructors or destructors explicitly. Assign a new value to the object in the array, like you would with ints or anything else: st[i] = Student(Name_i, id_i); And remove st[i].~Student(); 0 solved How can we assign variable values to a overload constructor separately(not at Initialization) in Cpp?
I am not sure what you are doing wrong so I will just show you how it can be done. Lets say you have directories and files [myProject] | +–[src] | | | +–[com] | | | +–[DatingService] | | | +– Main.java | +–[classes] and your Main.java file looks something like package com.DatingService; class … Read more
It depends on where the class is located. Ideally you would move your class out into its own project so that you can add the project to the other solution. You could also add an existing item from your MVC solution but this can lead to all kinds of dependency problems and shouldn’t be done. … Read more
There are of course many ways to set this up. I can remember being confused when starting out, below is an alternative example to give you something else to look at. It is not intended to be fancy but just bare-bones so that you can see a minimal setup of the class with an initializer. … Read more
So, it turns out that the problem was with declaring the array static in the class. Apparently what I actually wanted was to declare the variable but create it in the initialization function. I had tried this earlier, but the compiler choked and I thought that there was a problem with doing it this way. … Read more
{ x = a; y = b; } is the compound statement of the constructor point( int a = 0, int b = 0 ); Maybe it will be more clear if to rewrite the constructor like point( int a = 0, int b = 0 ) { x = a; y = b; } … Read more
It looks like you’re referring to the wrong scope for your operator[]. Perhaps you meant: CScreen::Proxy CScreen::operator[] (int index) const { return Proxy ( m_playground, index, m_y ); } 2 solved Proxy class and correct syntax c++ [closed]
The # symbol indicates that it’s an ID selector, so it will only apply to the single element that has that particular ID on the page. You’re incorrect about example A – that’s actually a selector for the element with the ID input, not a general selector for all inputs. The . symbol indicates that … Read more
Replace num1 and num2 with num3 and num4. class fraction: def __init__(self,num1,num2,num3,num4): self.num1=num1 self.num2=num2 self.num3=num3 self.num4=num4 def addition(self): print(self.num1+self.num2) return self.num1+self.num2 def sub(self): print(self.num1+self.num2) return self.num1+self.num2 def div(self): print(self.num1/self.num2) return self.num1/self.num2 def mul(self): print(self.num1*self.num2) return self.num1*self.num2 def reminder(self): print(self.num1%self.num2) return self.num1%self.num2 if __name__ ==”__main__”: object=fraction(1,2,3,4) object.addition() object.reminder() 0 solved Creating a class in python with … Read more
I think I know what your asking, and is that to load a class from a json file? You can use the json set up like this to load classes. My class file will be like this: class Player(): health = 0 attack = 0 defense = 0 My json file will be like this: … Read more
That’s the definition of an abstract class. You cannot create an instance of it, only a type derived from it. Think of something like a fruit. You cannot have a fruit sitting on the table. It must be a certain type of fruit, such as an orange or an apple. In this case, fruit would … Read more
Your question simplifies to “Why do Object Oriented Programming when you can write Procedural?” OOP vs Functional Programming vs Procedural Besides that, you now need somewhere to store your Cuboid data. Might as well create a Cuboid object anyway, right? 1 solved Why not everything is static function in java? Any differences in following two … Read more
Modify the constructor by adding one extra parameter dateOfBirth. Use this parameter to initialize your property DateOfBirth. This way, the Person can never be instantiated without a valid value for DateOfBirth. public Person(string firstName, string lastName, DateTime dateOfBirth) { FirstName = firstName; LastName = lastName; DateOfBirth = dateOfBirth; } now you can construct it like … Read more