What is variable shadowing in Perl?

What is variable shadowing in Perl?

Variable shadowing in Perl occurs when a variable in a local scope has the same name as a variable in an outer scope, effectively 'hiding' the outer variable.

Can you give me an example of variable shadowing?

Sure! If you have a global variable $x and then declare a local variable my $x inside a subroutine, the local $x shadows the global one within that subroutine.

What are the implications of variable shadowing?

Variable shadowing can lead to confusion and bugs if the programmer is not aware of which variable is being referenced, especially in larger codebases.

How can I avoid variable shadowing in my code?

To avoid variable shadowing, use distinct variable names for different scopes or utilize lexical scoping with my to limit the variable's visibility.