accessing lexical variables from inside a named sub

[zmughal]

Say I have the following code:

my $factor = 2;
sub mult_by_factor {
    $factor * shift;
}
say mult_by_factor(21);

This works when used in a regular Perl script, but not at the REPL. I know it might not be the best practice, but it can come in handy when testing things out.

There is are work arounds:

my $factor = 2;
*mult_by_factor =  sub {
    $factor * shift;
};
say mult_by_factor(21);

or

our $factor = 2;
sub mult_by_factor {
    $factor * shift;
}
say mult_by_factor(21);

This might be worth documenting at least.