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my $foo = 'bar'; 
my $bazqux = 42; 
my $quux = "$bazqux ${foo}s"; 
my $money = 'gold'; 
my $total_fortune = $quux . "of $money\n";

my $foo           = 'bar'; 
my $bazqux        = 42; 
my $quux          = "$bazqux ${foo}s"; 
my $money         = 'gold'; 
my $total_fortune = $quux . "of $money\n";

my ($foo, $bar,..., $baz,... $qux) = @hash{'abc', 'def',..., 'pqr',...
+ 'yz'};

my $foo = $hash{abc}; 
my $bar = $hash{def};
...
.
.
my qux = $hash{yz};

$q->param('foo','bar','baz')

$q->param(-name => 'foo', -values => ['bar', 'baz'])