I see some program, in its jsp code, it has following : And it will be mapped into a class. When you put some database object into this tag, it will automatically loop to load the data from database. I want to know, In Jsp, how to map the JSP tag to a class? Then when there is a such tag, system will know it should load a class to pro...
I am working in Visual C++. I have two .cpp files in the same source file. How can I access another class (.cpp) function in this main .cpp? ...
Possible Duplicate: main.cpp access member function of another .cpp witin same source file i use two cpp files within same sourcefile another.cpp here i use one class and member function like , Another.cpp class A { public : int Add(); }; int A::Add() { ----- ------- } ---------------...
Hi all, I have a Python class class pytest: i = 34 def func(self): return "hello world" When I access pytest.i, I get 34. I can also do this another way: a = pytest() a.i This gives 34 as well. If I try to access the (non-existing) pytest.j, I get Traceback (most recent call last): File "<pyshell#6>", line 1, in ...
Let's say I have two classes, named A and B, that are associated with each other such that it is most convenient if each class's object contains a reference to the other. In other words, class A has a variable "b" of class B. Class B has a variable "a" of class A. This way, the code in each class has easy access to the other class. I...
I'm trying to make a new CLLocation subclass. This is the skeleton: #import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> @interface JFLocation : CLLocation { } @end #import "JFLocation.h" @implementation JFLocation @end When I build the class I'm getting this errors: Undefined symbols: ".objc_class_name_CLLocation"...
Hi all, Could someone explain what I am doing wrong with my classes that my JTabbedPane doesn't display when the JFrame.setvisible is set to true? Yes, the main method of the program (which I won't put here) uses the event dispatching thread to initiate ArionGUI. Here is my code for the JFrame: import javax.swing.*; public class ...
I've created a new class and i want to declare a NSDictionary containing a table of values so that it's available in the rest of my application. I did it this way as a property of the class (modified): NSDictionary *ell = [NSDictionary dictionaryWithObjectsAndKeys: [[JFEllipsoid alloc] initWithRadius:6377563.396 withInvF:299.324964...
How can you add the class red to the class question_body when the question is removed? JS in HEAD jQuery('a.delete_question').live('click', function(){ jQuery.post('/codes/handlers/delete_a_question.php', { question_id: jQuery(this).attr('rel') }, function(){ $(.question_body).addClass("red"); /...
Hi there, I have created an Inventory Class but I don't know how to retrieve information from it. I know how to go over it in a foreach loop and display all items, but I don't know how to see if YoYo is in there and if it is, print the Name, Cost and Quantity to a label. Can anybody please help? ...
Hello, I have two ruby files. The first is require 'www/poster' poster = Poster.new() The second ('www/poster.rb') is require ... class Poster ... end The problem is, when I run the first file, I get an error: in `': uninitialized constant Poster (NameError) But if I replace the original code with just require ... class Poster...
With .NET Reflector we can see many .NET Class Library method's implementations. But is it possible to debug them as well? Or if I can put a break point inside them? ...
Hello, I'm trying to make an application in which both the developer and the end user are allowed retrieve data from a relational DB (chosen at runtime) without writing any SQL code at all (and preferably no string concatenations when interacting with the database). The purpose of the application is to two things: a GUI to an expression...
Hello, I asked this question to multiple people and until now I do not have an answer. ASP.NET C# Project tree (files and folders): > (ROOT) > > Class MyAccess (namespace myproject.core) > > (Directory John) ------> Class MyJohn (namespace myproject.core.John) ------> Class JohnSecret (namespace myproject.core.John) --...
Hey there! I was wondering why my php program is not returning the correct TRUE FALSE value when the class is included elsewhere it goes something like this source: signup.php class signup { function buildProfile() { if($logic){ $this->success = TRUE; }else{ $this->success = FALSE; ...
So I have a Perl class. It has a sort() method, and I want it to be more or less identical to the built-in sort() function: $object->sort(sub ($$) { $_[0] <=> $_[1] }); But I can't do: $object->sort(sub { $a <=> $b }); Because of scoping. But the List::Util module does this with reduce(). I looked at the List::Util module, and they...
Recently I've faced a question : How to avoid instantiating a Java class? However, I answered by saying: If you don't want to instantiate a class, use "abstract" modifier. Ex: javax.servlet.HttpServlet, is declared as abstract(though none of its methods are abstract) to avoid instantiation. Declare a no argument private constructor. ...
I am writing a Player model class in Python with Django, and I've ran into a small problem with the password member. I'd like the password to be automatically hashed upon assignment, but I can't find anything about overloading the assignment operator or anything. Is there any way I can overload the assignment of password so as to automa...
I had a problem recently with a php project that I finally realised was down to the way I had structured my classes. If I tried to include more than one class in a page and both classes shared the same parent class, the script failed. I've now resolved the issue but was wondering if someone could explain to me exactly why what I was doin...
Thanks in advance, I am looking for a good way to make forms in php. I don't want to have to create all the items in html and want it to look good, be easily validated, and in general be easy to work with. Suggestions. ...