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my $var = "Hi!";
{
   print("$var\n");
}

my $var = "Hi!";
for (1..2) {
   print("$var\n");
}

my $var = "Hi!";
print(map { "$var\n" } 1..2);

my $var = "Hi!";
sub func {
   print("$var\n");
}
func();

{
   my $var = "Hi!";
...
}

func();