Stack Overflow
Stack Overflow

Questions tagged [global]

Refers to a space where variables and other items may be accessed from any scope.

4669 questions
59
votes
4 answers

Why are global variables always initialized to '0', but not local variables?

Possible Duplicate: Why are global and static variables initialized to their default values? See the code, #include int a; int main(void) { int i; printf("%d %d\n", a, i); } Output 0 8683508 Here 'a' is initialized with '0',…
yuvanesh
  • 1,093
  • 2
  • 9
  • 19
58
votes
3 answers

Replace all instances of character in string in typescript?

I'm trying to replace all full stops in an email with an x character - for example "my.email@email.com" would become "myxemail@emailxcom". Email is set to a string. My problem is it's not replacing just full stops, it's replacing every character, so…
Rebecca
  • 583
  • 1
  • 4
  • 8
57
votes
3 answers

Why use the global keyword in C#?

I would like to understand why you might want to use the global:: prefix. In the following code, ReSharper is identifying it as redundant, and able to be removed:
Paul Fryer
  • 9,268
  • 14
  • 61
  • 93
56
votes
6 answers

Python Django Global Variables

I'm looking for simple but recommended way in Django to store a variable in memory only. When Apache restarts or the Django development server restarts, the variable is reset back to 0. More specifically, I want to count how many times a…
Joe J
  • 9,985
  • 16
  • 68
  • 100
55
votes
4 answers

Static global variables in C++

I would like to make an array of integers via the malloc method. I want this array to be global and be used anywhere in my program. I put code in a header file that looked like this: static int *pieces; Then I have a function that fills it with…
Christian Daley
  • 779
  • 2
  • 9
  • 13
54
votes
1 answer

global variable warning in python

I have a python 2.6 script (yes I know I should upgrade to at least 2.7) that looks like this: ret_code = 0 def some_func() global ret_code ... if __name__ == '__main__': global ret_code ... Now I get a warning if I run the…
whomaniac
  • 1,258
  • 4
  • 15
  • 22
53
votes
9 answers

The Angular Compiler requires TypeScript >=2.7.2 and <2.8.0 but 2.8.3 was found instead

I starting getting this error on my Angular app: The Angular Compiler requires TypeScript >=2.7.2 and <2.8.0 but 2.8.3 was found instead and when I try to downgrade typescript to the right version doing: npm install -g typescript@2.7.2 it says…
guilhebl
  • 8,330
  • 10
  • 47
  • 66
53
votes
4 answers

Python: Why is global needed only on assignment and not on reads?

If a function needs to modify a variable declared in global scope, it need to use the global declaration. However, if the function just needs to read a global variable it can do so without using a global declaration: X = 10 def foo(): global X …
Ashwin Nanjappa
  • 76,204
  • 83
  • 211
  • 292
52
votes
4 answers

PHP global or $GLOBALS

Is there a best practice / recommendation when I want to use a variable declared outside of a function when it comes to using: global $myVar $GLOBALS['myVar'] Thank you.
Francisc
  • 77,430
  • 63
  • 180
  • 276
51
votes
7 answers

How to define global functions in PHP

How can I define a global function which would be accessible from any page?
Sussagittikasusa
  • 2,525
  • 9
  • 33
  • 47
51
votes
2 answers

Global dictionaries don't need keyword global to modify them?

I wonder why I can change global dictionary without global keyword? Why it's mandatory for other types? Is there any logic behind this? E.g. code: #!/usr/bin/env python3 stringvar = "mod" dictvar = {'key1': 1, 'key2': 2} def foo(): …
Jovik
  • 4,046
  • 6
  • 24
  • 24
50
votes
5 answers

Declaring an ArrayList object as final for use in a constants file

I am generating an ArrayList of objects. Following is the code ArrayList someArrayList = new ArrayList(); Public ArrayList getLotOfData() { ArrayList someData = new ArrayList(); return someData; } someArrayList = eDAO.getLotOfData(); Once I…
Raghu
  • 1,141
  • 5
  • 20
  • 39
50
votes
1 answer

Global variables joke

What’s the best naming prefix for a global variable? // I saw this joke on the wall in my CS lab and, being fairly inexperienced in C++, didn't get it. Could someone explain it to me?
Mutantoe
  • 703
  • 8
  • 20
50
votes
4 answers

C++ static local function vs global function

What is the utility of having static functions in a file ? How are they different from having global functions in a file ? static int Square(int i) { return i * i; } vs int Square(int i) { return i * i; }
Arun
  • 3,138
  • 4
  • 30
  • 41
49
votes
4 answers

Changing a global variable from inside a function PHP

I am trying to change a variable that is outside of a function, from within a function. Because if the date that the function is checking is over a certain amount I need it to change the year for the date in the beginning of the code. $var =…
Chris Bier
  • 14,183
  • 17
  • 67
  • 103
1 2
3
…
99 100