global-variables

declaring global variables in yacc

Hello, I have a few source code files, such hashtable.c and such. The main issue is that when I write my main.c as such: #include "tokens.h" #include <stdio.h> void yyerror(char *errorMsg) { fprintf(stderr, "%s\n", errorMsg); } main() { yyparse(); hsh = createHashtable(); } And at the top of my yacc file (parser.y), I want to ...

Set global variables in c# class

Dear guys I tried to set a global variable with a livetime during one pagerequest. In classic als i used this like this: dim VariableName VariableName = "test"; sub testsub() VariableName += VariableName + "new" response.write VariableName end sub response.write VariableName '-> test testsub() '-> testnew Now in asp.ne...

How to Kohana global variables for all controllers?

EDIT: Kohana 2.3.4 Is the proper way to make a few variables available to all my controllers to add a MY_Controller.php file in my /application/libraries/ folder (shown in the docs here)? Are there any better ways to do it, or is this the only recommended method? Being new to OOP, can you link me to any examples? EDIT 2: I've heard ...

Objective-C: When to know that you are abusing the SIngleton method of Global Variables.

So my clients iphone app has balloned from 5 or so classes to over 25 in the last few weeks. With such a large (for the iphone anyway) class structure I've been utilizing the Singleton class for accessing global variables. The problem is that whenever I need to access a variable outside of the class I'm working on, I have a choice of e...

xcode global variables

hi experts, how to get xcode variables result from one view controller to another view controller, actually in one view controller i called web services to get userID which is declare as NSString, and in another view controller i want to display the userID which is retrieve from previous view controller, so how this can be done thanks ...

How to create global variables in Erlang

Hi, I am writing an ejabberd module to filter packets. I need to get the hostname to pull some configs using gen_mod:get_module_opt() . I have 4 important functions : start(Host, _Opt) : This is an ejabberd function to load my module. I get the 'Host' atom here filter_packet({From, To, XML}) : This is my packet filter hook. I cannot...

Javascript Global Variable Trouble

I'm having trouble with Global variables in Javascript. From every article I've read a variable declared out of a function has a complete scope. But bellow; var leftMargin = 36; alert(leftMargin); /* '36' */ function position(direction) { alert(leftMargin); /* 'undefined' */ } ...

VB: Accessing variable throughout the application

Hi, I have no of forms in VB 6. I want to access the value of one variable throughout the application. What is the way to create global variable in VB 6. EDIT: I want to create only one global variable. I am new to VB,So Please give me some code snippet Thanks. ...

iphone/objective-c: using singleton class as a container for globals

So I'm finding that I'm using a singleton User class to access global variables throughout an iphone app. In some cases I use the instance in almost all the methods within a class. So in the first few lines of each method I have statement such as: User *user = [User sharedManager]; This is obviously not a very DRY implementation. My...

Singleton Class iPhone

Ok, I'm trying to avoid global variables, so I read up on singleton classes. This is a try to set and read a mutable array, but the result is null. //Content.h @interface Content : NSObject { NSMutableArray *contentArray; } + (Content *) sharedInstance; - (NSMutableArray *) getArray; - (void) addArray:(NSMutableArray *)mutableArr...

How to maintain data across object instances in Objective-C?

I've had some experience developing for the iPhone but am entirely self taught and am trying to improve my practices. This is a question that is probably pretty introductory to programming. What is the best way (or is it possible) to maintain instance variables with values that are common to all instances of an object? Is it possible to...

Global variable with OpenMP

Hi All, Question on OpenMP for multi-threaded code: Are all global variables shared by the threads? How does one make certain global variable private to master thread? Thanks PS: It is a C code. ...

name 'times' is used prior to global declaration - But IT IS declared!

I'm coding a small program to time and show, in a ordered fashion, my Rubik's cube solvings. But Python (3) keeps bothering me about times being used prior to global declaration. But what's strange is that IT IS declared, right on the beggining, as times = [] (yes, it's a list) and then again, on the function (that's where he complains) ...

What should I name my global module in Python?

I'm writing an application in Python, and I've got a number of universal variables (such as the reference to the main window, the user settings, and the list of active items in the UI) which have to be accessible from all parts of the program1. I only just realized I've named the module globals.py and I'm importing the object which cont...

How can I share global values among different packages in Perl?

Is there a standard way to code a module to hold global application parameters to be included in every other package? For instance: use Config;? A simple package that only contains our variables? What about readonly variables? ...

CakePHP view problem... please help

I have these lines in my view file //////////////////////////// $a = 5; showme() showme() { global $a; echo $a; } //////////////////////////////// Problem: $a is not accessible in showme() function. I have no choice to pass $a as argument and no choice to move function from view. and it should be accessible in function through ...

What are some Pythonic ways to share variables with objects defined in a module?

I'm building a module where there are a whole lot of diverse objects which need to be controlled by several variables. If this were C, I would pass the objects a pointer to the variable / object I want them to watch, have the application change the variable as it needs to, and the objects in the module would "see" the new value. In mod...

Global variables in C++

I am supposed to write a program that should read from input numbers in the main() part, and then make some calculations in other bool functions. I don't want to insert the whole arrays of the numbers and all the other parameters in the functions everytime i call them. My question is this: Can i make somehow in c++ to read input in som...

In javascript, is accessing 'window.Math' slower or faster than accessing the 'Math' object without the 'window.'?

I'm kind of curious about what the best practice is when referencing the 'global' namespace in javascript, which is merely a shortcut to the window object (or vice versia depending on how you look at it). I want to know if: var answer = Math.floor(value); is better or worse than: var answer = window.Math.floor(value); Is one bette...

C fork dealing with global variable!

Im not understanding the output of this program: #include <pthread.h> #include <stdio.h> #include <unistd.h> int i = 0; int main() { while(i<3) { fork(); printf("%d\n",i); ++i; } } The output is: 0 1 2 2 1 2 0 1 2 2 2 1 2 2 Can please someone tell me how i should tackle this issue in order to fu...