note muba <blockquote><i>In the above example I have an array on the LHS and an array on the RHS. This is equivalent to: </i></blockquote> <p>Strictly speaking... this not true. You have a <i>list</i> on the LHS, as per [http://perldoc.perl.org/perlfaq4.html#What-is-the-difference-between-a-list-and-an-array?|perlfaq4: What is the difference between a list and an array]:</p> <blockquote><p><i>A list is a fixed collection of scalars. An array is a variable that holds a variable collection of scalars. An array can supply its collection for list operations, so list operations also work on arrays</i></p> <p>...</p> <p><i>Array operations, which change the scalars, rearranges them, or adds or subtracts some scalars, only work on arrays. These can't work on a list, which is fixed. Array operations include <c>shift</c>, <c>unshift</c>, <c>push</c>, <c>pop</c>, and <c>splice</c>.</i></p> </blockquote> 1014122 1014134