Perl interpolates variable names:
my $name = 'Paul';
print "Hello, $name!\n"; # Hello, Paul!
my @char = ('a', 'b', 'c');
print "$char[1]\n"; # b
my %map = (a => 125, b => 1080, c => 11);
print "$map{a}\n"; # 125
Arrays may be interpolated as a whol...