Questions tagged [global]
Refers to a space where variables and other items may be accessed from any scope.
global
519
questions
92
votes
6
answers
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Are global variables in PHP considered bad practice? If so, why? [duplicate]
function foo () {
global $var;
// rest of code
}
In my small PHP projects I usually go the procedural way. I generally have a variable that contains the system configuration, and when I nead ...
- 2,837
339
votes
10
answers
477k
views
Using global variables between files?
I'm bit confused about how the global variables work. I have a large project, with around 50 files, and I need to define global variables for all those files.
What I did was define them in my ...
user1632861
491
votes
11
answers
182k
views
What does "nonlocal" do in Python 3?
What does nonlocal do in Python 3.x?
To close debugging questions where OP needs nonlocal and doesn't realize it, please use Is it possible to modify variable in python that is in outer, but not ...
- 16.7k
46
votes
9
answers
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Why are global variables considered bad practice?
I keep seeing warnings not to use global variables in JavaScript, but it seems that the only reason people say that is because the clogs up the global namespace. I can imagine this being easily fixed ...
- 749
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votes
14
answers
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Global Git ignore
I want to set up Git to globally ignore certain files.
I have added a .gitignore file to my home directory (/Users/me/) and I have added the following line to it:
*.tmproj
But it is not ignoring ...
- 30.3k
193
votes
3
answers
134k
views
What happens to global and static variables in a shared library when it is dynamically linked?
I'm trying to understand what happens when modules with globals and static variables are dynamically linked to an application.
By modules, I mean each project in a solution (I work a lot with visual ...
- 3,016
156
votes
9
answers
301k
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Global variables in Javascript across multiple files
A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been ...
- 10.1k
130
votes
12
answers
193k
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How to make a cross-module variable?
The __debug__ variable is handy in part because it affects every module. If I want to create another variable that works the same way, how would I do it?
The variable (let's be original and call it '...
- 4,208
37
votes
6
answers
186k
views
Passing Variable through JavaScript from one html page to another page
I have two pages - "page 1" and "page 2". On page 1 there's an text-box with a value of e.g. 100 and a button at the end.
By pressing the button I want javascript to save the value of the textbox in ...
- 391
205
votes
10
answers
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How to declare a global variable in php?
I have code something like this:
<?
$a="localhost";
function body(){
global $a;
echo $a;
}
function head(){
global $a;
echo $a;
}
function ...
- 5,694
86
votes
11
answers
63k
views
How to get the global object in JavaScript?
I want to check in a script if a certain other module is already loaded.
if (ModuleName) {
// extend this module
}
But if ModuleName doesn't exist, that throws.
If I knew what the Global Object ...
- 75.9k
61
votes
4
answers
84k
views
Why are global variables always initialized to '0', but not local variables? [duplicate]
Possible Duplicate:
Why are global and static variables initialized to their default values?
See the code,
#include <stdio.h>
int a;
int main(void)
{
int i;
printf("%d %d\n", a, i);...
- 1,113
35
votes
4
answers
26k
views
Assign multiple objects to .GlobalEnv from within a function
A post on here a day back has me wondering how to assign values to multiple objects in the global environment from within a function. This is my attempt using lapply (assign may be safer than <<...
- 109k
12
votes
2
answers
710
views
'this' different between REPL and script
After reading through mozilla docs I found this:
In the global execution context (outside of any function), this refers to the global object, whether in strict mode or not.
After playing with ...
- 1,118
5
votes
2
answers
2k
views
Android startCamera gives me null Intent and ... does it destroy my global variable?
I have the next problem:
when I try to start my camera, I can take the picture, even save it on my sdcard, but when I'm going to get the path for showing it on my device I get errors.
My global ...
- 5,413