17 lines
503 B
Perl
17 lines
503 B
Perl
$friend="friend"; # Global variables
|
|
$pal="Tom";
|
|
print "$friend and $pal are global.\n";
|
|
sub guests {
|
|
my $friend="Pat"; # Lexically scoped variable
|
|
local $pal="Chris"; # Dynamically scoped variable
|
|
print "$friend and $pal are welcome guests.\n";
|
|
&who_is_it;
|
|
}
|
|
|
|
sub who_is_it {
|
|
print "global, $friend, here.\n";
|
|
print "pal is now $pal.\n"; # Dynamically scoped
|
|
}
|
|
|
|
&guests;
|
|
print "Global friends are back: $friend and $pal.\n"; |