Context Considerations

Expression	Context	Variable	Evaluates to
$scalar	scalar	$scalar, a scalar	the value held in $scalar
@array	list	@array, an array	the list of values (in order) held in @array
@array	scalar	@array, an array	the total number of elements in @array (same as $#array + 1)
$array[$x]	scalar	@array, an array	the ($x+1)th element of @array
$#array	scalar	@array, an array	the subscript of the last element in @array (same as @array -1)
@array[$x, $y]	list	@array, an array	a slice, listing two elements from @array (same as ($array[$x], $array[$y]))
"$scalar"	scalar (interpolated)	$scalar, a scalar	a string containing the contents of $scalar
"@array"	scalar (interpolated)	@array, an array	a string containing the elements of @array, separated by spaces
%hash	list	%hash, a hash	a list of alternating keys and values from %hash
$hash{$x}	scalar	%hash, a hash	the element from %hash with the key of $x
@hash{$x, $y}	list	%hash, a hash	a slice, listing two elements from %hash (same as ($hash{$x}, $hash{$y})