Hi I'm studying for my test in C and i've encountered a question which i can't figure its answer. A programmer wrote a program to count number of users (Count.h, Count.c): /******** FILE: Counter.h ***********/ static int counter = 0; int getUsersNum (); /******** END OF FILE: Counter.h ****/ /******** FILE: Counter.c ***********/ #...
I'm trying to interface a c++ member function with a legacy C library taking a function pointer - I can't see why this keeps coming up with link errors, Can anyone see why ? link errors /tmp/ccl2HY1E.o: In function `VerifyWrapper::verifyGlue(int)': callback.cpp:(.text._ZN13VerifyWrapper10verifyGlueEi[VerifyWrapper::verifyGlue(int)]+0xe...
Hy there i a beginner in java started 3 weeks ago, im having some problems with this code. in the main method i have an array containing 10 elements. i've already made several methods to like public static void println(int[] array) ------ to print and array public static boolean isPrime(int el) ----------- prime test. returns tru...
Hi, I'm trying to figure out the correct way of initializing a static container variable whose template value is a private inner class. Here's a toy example #include <vector> using namespace std; template <class myType> class Foo { private: class Bar { int x; }; static vector<Bar*> bars; }; template <class myT...
I understand that one benefit of having static member functions is not having to initialize a class to use them. It seems to me that another advantage of them might be not having direct access to the class's not-static stuff. For example a common practice is if you know that a function will have arguments that are not to be changed, to...
I'm studying dynamic/static scope with deep/shallow binding and running code manually to see how these different scopes/bindings actually work. I read the theory and googled some example exercises and the ones I found are very simple (like this one which was very helpful with dynamic scoping) But I'm having trouble understanding how stat...
I have a Networking service that i want to use as a Service. It's a local Service since it's not valid anymore once the application process is dead and no Other applications need to access it.(or should...). I was pondering if to use the IBinder interface with local reference to the class and decided not to, for the moment. I have the ...
Hi, I have a pretty weird problem: My Class looks like this <?php class asd { private static $variable; public static function blabla(){ self::$variable="blubb"; } } ?> When I'm trying to call asd::blabla() with the help of the __autoload function, everything works fine. But when I'm trying to call it without a...
hello I'm new to PHP and I need help to understand the basics of PHP class. I want to have example of a class that uses private public protected and static. and how do they work.. Thanks in advance. Oh I forgot how to extends also. I'm talking about the parent and child something or what.. Thanks again. ...
I'm trying to implement a category of an existing class. There is a static variable in the existing class. If I try to access the static variable from a category, I'm getting an error that the static variable is undeclared. Is it possible to access static variables in ObjC Categories ? ...
Hi, i've got a class public class Preferences extends PreferenceActivity implements OnSharedPreferenceChangeListener out of this i try to call a method from an other class, this method contains: mFoo.setTextColor(getResources().getColor(R.color.orange)) But it doesnt work, it tells me, getResources isnt static... how can i change? ...
A collegue of mine claims that in C# having static members in non-static classes prevents instances of those classes from ever being garbage collected and that this is a common source of C# memory leaks. As a result he always wraps static members in a static class and gains access to them from there via a static property or method(s) on ...
I'm maintaining an application that consumes a common library that has a static instance of a class(ClassWrapper). This class is a basically a wrapper around the Microsoft patterns and practices's CacheManager (v3.1 of the EL) The library is hosted in a web application and also in a windows service app, (both are inherently multi thre...
Is there a way in a C# static method to refer to the Type the method is defined in? In an instance method you can determine the type by: public void Foo() { Type type = this.GetType(); } how would it look like in a static method? public static void Bar() { Type type = ....? } Update: Sorry, clarification needed: I know the...
class foo { const bar; } and to access it we have to do: self:bar; and not, $this->bar; Is this correct? If so, why? Thanks a lot, MEM ...
Hi, I have been reading articles about unnamed namespaces the whole day, most articles explained when you should use unnamed namespaces over the static keyword. But I am still left with one big question when is it appropriate to use static? After all it is not completely deprecated, what about header files with static functions should I...
Hi, I want to display the context of a .txt file in an html file. I know this would be very easy with PHP or javascript, but, to put you in context, I am building a content administrator for a Facebook page (Not app). Facebook FBML is static and doest allow php and VERY limited javascript. The first question would be if this is even...
I'm currently working on developing a personal Django site that will consist of various technologies / subdomains. My main page(s) will be Django, with a blog.blah.com subdomain that runs wordpress, and several other subdomains for projects (project1.blah.com, project2.blah.com), that are static HTML files (created with Sphinx). I'm hav...
By "default" I mean just using the [Serializable] attribute on the class. I want to say that no, static fields would not be serialized, but I'm not exactly sure. ...
#include<stdio.h> int main(void) { static int i=i++, j=j++, k=k++; printf("i = %d j = %d k = %d", i, j, k); return 0; } Output in Turbo C 4.5 : i = 0 j = 0 k = 0 In gcc I'm getting the error: Initializer element is not constant Which one is logically correct ? I'm in bit confusion.. ...