In Dart, you can define a global variable by declaring it outside of any classes or functions. Global variables are accessible from any part of your code, and their values persist throughout the lifetime of the application.
Here is an example of how you can define a global variable in Dart:
int counter = 0;
void main() {
counter += 1;
print(counter);
}
In this example, the counter variable is a global variable that is accessible from the main function. The value of counter persists throughout the lifetime of the application and can be updated from any part of the code.
It is important to use global variables sparingly, as they can make your code harder to understand and maintain. Global variables can also make it difficult to test your code, as their values can change from one test to another. In general, it is a good idea to avoid global variables and instead pass values as arguments between functions or classes.
