What are global variables in Swift?

What are global variables in Swift?

Global variables in Swift are variables that are defined outside of any function or class, making them accessible throughout the entire file.

Can you give me an example of a global variable?

Sure! Here's an example:

var globalCounter = 0

This variable can be accessed and modified from anywhere in the file.

Are there any downsides to using global variables?

Yes, global variables can lead to code that is harder to maintain and debug, as they can be modified from anywhere, making it difficult to track changes.

When should I use global variables?

Use global variables sparingly, typically for constants or shared resources that need to be accessed across multiple functions.