in reply to deep copy of nested data structure

The thaw function in FreezeThaw returns an array which you are assigning to a scalar. The scalar ($copy) therefore ends up getting the number of elements in the array (in this case 1).

Try replacing your code with this:

($copy) = thaw freeze $hashref;

to force an array assignment.


"Perl makes the fun jobs fun
and the boring jobs bearable" - me