Program Repair Shop

Try it Both Ways

     if (-e $dst) {
       die "Can't continue because a file has target's dir name\n"
         unless -d _;
     } else {
       mkdir $dst or die "Couldn't create dir : $target_node\n";
     }

Folks at the practice sessions suggested a number of alternatives:

     if (-e $dst) {
       -d _ or die "Can't continue because a file has target's dir name\n"
     } else {
       mkdir $dst or die "Couldn't create dir : $target_node\n";
     }

     if (! -e $dst) {
       mkdir $dst or die "Couldn't create dir : $target_node\n";
     } elsif (! -d _) {
       die "Can't continue because a file has target's dir name\n"
     }