problem about base-Collection of common programming errors

• 
  Wim Coenen
  c# variables base derived
  class Program {static void Main(string[] args){baseClass obj = new baseClass();obj.intF = 5;obj.intS = 4;child obj1 = new child();Console.WriteLine(Convert.ToString(obj.addNo()));Console.WriteLine(Convert.ToString(obj1.add()));Console.ReadLine();} } public class baseClass {public int intF = 0, intS = 0;public int addNo(){int intReturn = 0;intReturn = intF + intS;return intReturn;} } class child : baseClass {public int add(){int intReturn = 0;intReturn = base.intF * base.intS;return intReturn;} }
• 
  GenTiradentes
  c++ base
  Right now I’m working on a project which requires an integer to be converted to a base 62 string many times a second. The faster this conversion is completed, the better.The problem is that I’m having a hard time getting my own base conversion methods to be fast and reliable. If I use strings, it’s generally reliable and works well, but it’s slow. If I use char arrays, it’s generally much faster, but it’s also very messy, and unreliable. (It produces heap corruption, comparison of strings that s
• 
  Sriram Sakthivel
  c# constructor base
  Let’s assume we have following classes:class BaseClass {public BaseClass(){//sth to doHERE I WOULD LIKE TO KNOW WHICH CHILD CLASS INVOKES BASE CONSTRUCTOR} }class ChildClass : BaseClass {public ChildClass() : base() {} }As described above, I would like to find out in the runtime which child class invoked base class constructor?
• 
  user1395887
  c++ polymorphism base runtime.exec derived
  I am stuck with a problem of runtime pointer assigning in C++. I have a base class with 2 members thread and threads.class base {struct base_struct {int a;};base_struct thread;std::vector<base_struct> threads;void fn () {}};derived1 is derived from base and has the same two members (thread and threads) but of different type.class derived1 : public base {struct derived_struct11 : public base_struct {int b;};derived_struct11 thread;std::vector<derived_struct11> threads;void fn () {prin
• 
  Marlon
  c# base
  namespace contest {class Program{static void Main(string[] args){B b = new B();}}class A {public A() {k();}private void k() {Console.WriteLine(base.GetType().Name);} }class B : A {} }Can someone tell me why it outputs “B” instead of “Object”, doesn’t base.GetType() get A’s parent object therefore the root Object?Thanks a lot
• 
  Dan Selig
  xcode internationalization nib base
  I have a project that I created in xcode 4.5 with a target ios of 5.0 and I used Base Internationalization. Base Internationalization moves the nib files to Base.lproj.The project runs on my iPhone 4 running ios 6 and on my iPad 3 running ios 6. But this error shows when I try to run it on my iPad 1 running ios 5.1.1. In the Build Phase section of the target, the nib files are shown in red.When I try to add the nib files to the Build Phases bundle resources, they add but they are still red (n
• 
  choroba
  perl oop inheritance import base
  I have a base class, named Foo::Base, I need to inherit its methods, like ‘new’ and to import some subroutines names in a scope:package Foo::Base;sub new { … }sub import {no strict ‘refs’;my $caller = caller;*{“${caller}::my_sub”} = sub { 1 }; }1;So, I need to use this base class in my second class, Foo::Child:use base ‘Foo::Base’;… and it works for inheritance, but it doesn’t import ‘my_sub’ in a scope. I can add stringuse Foo::Base;for it and it helps, but I don’t want to write something l
• 
  Kent Fredric
  c++ class declaration base forward
  I’m trying to create proper header files that don’t include much other files. (To keep them clean, to speed up compiling time, …)I encountered two problems while doing this:1 – Forward declaratoin on base classes doesn’t work.class B;class A : public B {// … }2 – Forward declaration on STD classes doesn’t work.namespace std {class string; }class A {string aStringToTest; }How do I solve these problems?
• 
  user1757550
  class base derived
  I have a vague idea of why this isn’t allowed, but I’m looking for something more concrete. I’m assuming it has something to do with the fact that all of the methods in a base class might not necessarily be virtual.Can anyone help me out?
• 
  rzr
• 
  Chris
  c++ class undefined base
  My code below generates the error ‘WorldObject’: [Base class undefined (translated from german)]Why is this? Here is the code which produces this error:ProjectilObject.h:#pragma once#ifndef _PROJECTILOBJECT_H_ #define _PROJECTILOBJECT_H_#include “GameObjects.h” class WorldObject; class ProjectilObject: public WorldObject { public:ProjectilObject(IGameObject* parent,int projectiltype);void deleteyourself(); protected: virtual void VProcEvent( long hashvalue, std::stringstream &stream);virt

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