I am writing a program in Java, in which I define a class class Point { double x; double y; } Then in a method, I define an array of points, as follows: Point[] line = new Point[6]; In the same method, I have the line line[SampleSize - i + 1].x = i; The first time this statement is hit, the value of its array index i...
For example I have a class named Temp then I assigned values to it using an IList<Temp>. After populating the IList<Temp> I created a dictionary and assign an int key to each object. My question is that how do I remove from IList and dictionary the temp_value with the name b and a with a key value of "2"? class Temp { public string ...
class Position { private double x,y; private int id; public String toString(Position a){ String words ="(" + a.x + "," +a.y + ")"; return words; So I'm getting a memory address returned here. What am I doing wrong? I want to get the actual values of x and y that were set using setters. I also have getters...
The instructions say: Create an equals method that takes an object reference and returns true if the given object equals this object. * Hint: You'll need 'instanceof' and cast to a (Position) I have: class Position { private double x,y; private int id; public boolean instanceOf(Object a) { boolean isInstance; ...
Is there any execution speed difference between the following two lines of code? I cannot tell from looking at the IL: int x = MainObject.Field1; int x = MainObject.Public.Fields.Field1; I know from Delphi (native code), there is no difference. ...
I'm creating a group of form controls for each object in a list, is it OK to store a reference to the object in the controls Tag property? I'm doing this so I can have a generic Click event on the controls, so when they are clicked I can update a field in the object that they represent. So the click handler will look something like thi...
how can initialize empty objects in python ? I need to initialize my class members (for examples tk.frames, vtk visualizations etc) thanks ...
Hi, I was looking for a way to list .text section defined symbols on a C shared object loaded on a python program using the ctypes wrapper. In other words, i am trying to get a list of defined functions on a CDLL loaded object. If there is no way to do this with ctypes or library ( or python binding ), another option is a python elf pa...
For example, instead of doing ArrayList<ClassName> variableName; you do ArrayList variableName; then later you add an object of type "ClassName" variableName.add(objectName); will that automatically set the type of your array as ArrayList<ClassName> ? ...
I have the following class: class Position { private double x,y; private int id; private static int count=0; //counts number of times a Position object has been created public Position (double initX, double initY) { x=initX; y=initY; id=count; count++; ...
Ok so say I have a class class Ghost { private int x, y, direction; private Color color; Now say I dont explicitly define a constructor, so it just uses the default one. If I were to create a new Ghost object, what value would direction have? 0 right? But I dont know why I keep getting a value of 1 for direction. Anything o...
Anybody any ideas on how to remove children from stage using AS3 if I store the reference to the objects in an array and they exist in different locations i.e they are not all children of the same parent? SomeArray.push(this); ...
So lets say I want to make a deep copy of an object, but using its contsructor. So I have: public class PositionList { private Position[] data = new Position[0]; private int size = 0; public PositionList(PositionList other, boolean deepCopy) { if (deepCopy==true){ size=other.getSize(); for (int i=0;i<data.le...
So say I have this class: public class PositionList { private Position[] data = new Position[0]; private int size = 0; Now lets say I create a new PositionList object with the default constructor, so no arguments like so: PositionList list = new PositionList(); Does the new list object have any attributes? Does it have a si...
I want to make a deep copy of an object array using a constructor. public class PositionList { private Position[] data = new Position[0]; public PositionList(PositionList other, boolean deepCopy) { if (deepCopy){ size=other.getSize(); data=new Position[other.data.length]; for (int i=0;i<d...
This is really a silly question, but I've been staring at this problem for way too long and I just cant figure out what the problem is: /** * public boolean overlap(int targetX, int targetY) { * Returns true if the target position is sufficient close to this ghost * If target position is 16 pixels or less in the x directi...
Suppose I have a list of objects of a certain custom type and I need to find an object given only the value of one of its attributes, how do I do it? Eg. // Where user1 ... usern are objects of some class User users = [ user1, user2, user3 ... usern ] // How do I find out the objects that have the "foo" attribute set to "bar" ...
I'm trying to write an equals method for objects that compares their fields, and if equal, then true: public boolean equals(Ghost other){ if (this.x == other.x && this.y == other.y && this.direction==other.direction && this.color==other.color) return true; else return...
I'm trying to write a method that looks through an array of objects for a certain color, which is also an object. public Ghost findFirst(Color c){ for (int i=0;i<ghosts.length;i++) { if (ghosts[i].getColor()==c) return ghosts[i]; else return null; } } So if the col...
I want to make a deep copy method. I seeked help here the other day with this issue, but that was for a copy constructor. Now I need a regular method. I have the code created (nonworking), but I'm just not understanding it completely. public GhostList deepCopy(){ int length=this.getLength(); GhostList jadeed=new GhostLis...