An instance is a specific realization of any object.
Questions tagged [instances]
516 questions
0
votes
1 answer
Factory Pattern: typedef Class *(createClassFunction)(void)
What does typedef Class *(createClassFunction)(void) (or another variation is typedef Class* (__stdcall *CreateClassFunction)(void))stand for?
What does it mean? How am I supposed to explain it?
Especially in the context of Factory Patterns...
Mocanu Nicolae
- 39
- 10
0
votes
3 answers
How to set the text of an instantiated label?
I am teaching my self java(fx) in order to create some applications for my small business.
However I am stuck with the problem below. The actual program is much larger and complicated so I created a new, smaller and easier on the eye class to get…
RAG7
- 13
- 7
0
votes
1 answer
Do access modifiers always have to be instantiated?
I've read the msdn.microsoft guides, a example of an acessor is the following:
// public class:
public class Tricycle
{
// protected method:
protected void Pedal() { }
// private field:
private int wheels = 3;
// protected…
César Amorim
- 367
- 3
- 16
0
votes
0 answers
AS3 top down view game sound delay lagging latency on new level load
For class I had to make an as3 top down view game.
Everything seems to work fine in level1 but there is a sound delay on level2. When the character collides with the hand in level2 and the sound object is called to play, the sound does not play…
agentjesse
- 1
- 2
0
votes
2 answers
Creating multiple instances in libgdx Box2d
I create an object in box2d, lets say a square and I want to make many copies of square with different coordinates so I can call it with
Square square = new Square(int x, int y)
Inside square I created a method that changes the square color.
What…
Mark
- 29
- 3
0
votes
2 answers
Static Collection of Instances C++?
I have a class Phone, I want it, when created to add itself to a static collection of phones. So I have the collection:
static vector < class Phone* > instances;
And in the constructor I do this:
Phone::instances.push_back(this);
But the linker…
Nicolás Belazaras
- 97
- 6
0
votes
5 answers
Java: how to create instances of two different classes in a third class and pass references to each other through the constructors
This is more of a theoretical question. Suppose I have 3 classes A, B and C. What I want to do is this:
public class A {
B b = new B(c);
C c = new C(b);
}
public class B {
public B(C c) {
}
}
public class C {
public C(B b) {
}
}
I…
user3433393
- 61
- 6
0
votes
1 answer
How can I refer to a parent from a child?
The wording of the title probably needs re-visiting, but for now consider the following code:
var ParentControl = function()
{
this.ShowAlert = function()
{
alert('hi!');
}
this.childControl = new ChildControl();
};
var…
user1017882
0
votes
0 answers
SQL Server Login Error when connecting to server with multiple instances
I have a new dedicated SQL Server with 3 different instances installed.
SQL Server 2008 STANDARD
SQL Server 2008 EXPRESS R2
SQL Server 2012 EXPRESS
I am able to bring up all three in SSMS and can attach databases etc no problems.
I am able to…
Craig Edmonds
- 2,052
- 3
- 14
- 13
0
votes
1 answer
Dynamically add Multiple Instances of a Form Based on User Input - Flex
I'm trying to create a form that based on the users input would determine how many forms to generate dynamically.
I have a base state with a combo box that contains 1-4. Bases on the users selection I would like to have the next state generate the…
Adam
- 2,632
- 8
- 34
- 60
0
votes
1 answer
Can a static variable be updated by calling a method from another class in this circumstance? Java
Say, my Store class has this information...
public class Store {
private Product product1, product2, product3;
private static int productCount = 0;
public Store() {
product1 = new Product();
product2 = new Product();
…
user3618849
- 1
- 4
0
votes
2 answers
as3 Trouble manipulating objects outside the Document class
Im new to actionscript and I have have been mucking around trying to create a sidescrolling game. All was going well until I realized I need a game over feature. The problem is I have many movieclip objects with their own instance names that I…
Andrew
- 189
- 1
- 7
0
votes
3 answers
Output class instance variables
So I am learning how instances work and how to set them and such and I am wondering if I can output the variables of an instance without to output them separately.
Ex//
class Program
{
static void Main(string[] args)
{
Person Ryan =…
rguarascia.ts
- 694
- 7
- 19
0
votes
1 answer
Instances calling method seem to reference same list
I am working through Cravens pygame tutorial and need some clarification.
Here is the code that is causing the issue:
CODE1:
import pygame
import random
# Define some colors
BLACK = ( 0, 0, 0)
WHITE = ( 255, 255, 255)
GREEN = ( 0, 255, 0)
RED = (…
Tun
- 19
- 6
0
votes
3 answers
Accessing Vector from another class
I have these two classes, named Student and Subject
import java.util.Vector;
public class Student
{
int registrationNumber;
String firstName;
String familyName;
Vector sub;
public Student(int registrationNumber,String…
user3029345