How do I create or use a global variable inside a function? How do I use a global variable that was defined in one function inside other functions? Failing to use the global keyword where appropriate ...

I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope? This is related to sharing variables across source ...

I have a global variable in JavaScript (actually a window property, but I don't think it matters) which was already populated by a previous script, but I don't want another script that will run later ...

I am creating an application which requires login. I created the main and the login activity. In the main activity onCreate method I added the following condition: public void onCreate(Bundle ...

Working on an idea for a simple HTMLElement wrapper I stumbled upon the following for Internet Explorer and Chrome: For a given HTMLElement with an id in the DOM tree, it is possible to retrieve the &...

How can I print all global variables/local variables? Is that possible in gdb?

I know I should avoid using global variables in the first place due to confusion like this, but if I were to use them, is the following a valid way to go about using them? (I am trying to call the ...

From my understanding, Python has a separate namespace for functions, so if I want to use a global variable in a function, I should probably use global. However, I was able to access a global variable ...

I have a problem where i'm initialising a variable on the scope in a controller. Then it gets changed in another controller when a user logs in. This variable is used to control things such as the ...

How can I create global variable keep remain values around the life cycle of the application regardless which activity running.

When I try this code: a, b, c = (1, 2, 3) def test(): print(a) print(b) print(c) c += 1 test() I get an error from the print(c) line that says: UnboundLocalError: local variable 'c' ...

In C/C++, there is a widespread opinion that global variables are "bad" and should be avoided when possible. Leaving aside the question whether this opinion is correct or not, what are the ...

I know that in general, global-variables are to be avoided. Nevertheless, I think in a practical sense, it is sometimes desirable (in situations where the variable is integral to the program) to use ...

What am I doing wrong here? counter = 0 def increment(): counter += 1 increment() The above code throws an UnboundLocalError.

It seems that I may have inadvertently loaded the password validation plugin in MySQL 5.7. This plugin seems to force all passwords to comply to certain rules. I would like to turn this off. I've ...