What are the scope rules in Perl?

What are the scope rules in Perl?

In Perl, scope rules determine the visibility and lifetime of variables. There are three main types of scope: global, lexical, and package.

Can you explain lexical scope in more detail?

Lexical scope in Perl means that a variable is only accessible within the block of code where it is defined, typically using 'my'.

What happens if I try to access a lexical variable outside its scope?

If you try to access a lexical variable outside its scope, Perl will throw an error indicating that the variable is not defined.

Are there any best practices for using scope in Perl?

Yes, it's best to use lexical variables with 'my' for better encapsulation and to avoid unintended side effects.