- Added srand() after each fork to re-seed the random numbers.

Example:
	10.times {
 	   say ({rand(20)}.fork.get);  # prints random number
           say rand(20);	       # print a different random number
	}

lib/Sidef/Types/Block/Code.pm

@@ -342,6 +342,7 @@ package Sidef::Types::Block::Code {
 
         my $pid = fork() // die "[FATAL ERROR]: cannot fork";
         if ($pid == 0) {
+            srand();
             Storable::store($self->run, $filename);
             exit 0;
         }