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Regular cast vs. static_cast vs. dynamic_cast [duplicate]
... pointer if the object referred to doesn't contain the type casted to as a base class (when you cast to a reference, a bad_cast exception is thrown in that case).
if (JumpStm *j = dynamic_cast<JumpStm*>(&stm)) {
...
} else if (ExprStm *e = dynamic_cast<ExprStm*>(&stm)) {
......
Abstract functions in Swift Language
...cept of abstract in Swift (like Objective-C) but you can do this :
class BaseClass {
func abstractFunction() {
preconditionFailure("This method must be overridden")
}
}
class SubClass : BaseClass {
override func abstractFunction() {
// Override
}
}
...
Why does an overridden function in the derived class hide other overloads of the base class?
... drastic shift in overload resolution results.
For example, let's say the base class B has a member function foo that takes a parameter of type void *, and all calls to foo(NULL) are resolved to B::foo(void *). Let's say there's no name hiding and this B::foo(void *) is visible in many different cl...
Convert integer to binary in C#
...
Convert from any classic base to any base in C#
String number = "100";
int fromBase = 16;
int toBase = 10;
String result = Convert.ToString(Convert.ToInt32(number, fromBase), toBase);
// result == "256"
Supported bases are 2, 8, 10 and 16
...
Is there a way to instantiate objects from a string holding their class name?
I have a file: Base.h
9 Answers
9
...
Pure virtual function with implementation
...lemented in a derived type that will be directly instantiated, however the base type can still define an implementation. A derived class can explicitly call the base class implementation (if access permissions allow it) by using a fully-scoped name (by calling A::f() in your example - if A::f() were...
Why do we need virtual functions in C++?
... you're assigning the subclassed object (Cat), the method being invoked is based on the pointer type (Animal) not the type of object it is point to. This is why you need "virtual".
– rexbelia
Feb 7 '16 at 4:08
...
C++静态和多态，亦敌亦友 - C/C++ - 清泛网 - 专注C/C++及内核技术
...遭遇静态函数
#include <iostream>
using namespace std;
class Base
{
public:
virtual void foo(void){ cout << "Base::foo()" << endl; }
};
class Derived : public Base
{
public:
void foo(void){ cout << "Derived::foo()" << endl; }
} ;
class DerivedAgain : public Derived
...
How to call a parent method from child class in javascript?
..., with some tests, you can use it like this, inside your method use : call_base(this, 'method_name', arguments);
It make use of quite recent ES functions, an compatibility with older browsers is not guarantee. Tested in IE11, FF29, CH35.
/**
* Call super method of the given object and method.
* ...
super() in Java
...program 2 proofs our first statement of super() in Java.
Program 1
class Base
{
int a = 100;
}
class Sup1 extends Base
{
int a = 200;
void Show()
{
System.out.println(a);
System.out.println(a);
}
public static void main(String[] args)
{
new Sup1...