Re: Stepping through a hash while modifiying its content

[Anonymous Monk]

# Access the hash, and do the deed including any hashkey, value deletions

You should replace that comment with some code :)

You could delay deletion :)

{
   my @goners;
   while( my( $k, $v ) = each %hash ){
      push @goners, $k;
   }
   delete @hash{ @goners };
   undef @goners;
}

[Gorgarian]

That is a good suggestion too -- I could run the code in blocks, saving up the deletions, and doing a clean-up after each 1M iterations, then restarting the while loop. I will see how much longer it takes to run after restricting myself to deleting only deleting the most recent iteration reference, and if it is a problem, move to your idea as a Plan B.

Thanks for your help. Learning ... :)