Or else you might change what you put into the hash: 

  my %isthere = map { sprintf ('%05d',$_) => 0 } ($low..$high);

[download]
Assuming that all numbers you want to check are in the same format...

pike

In reply to Re: Re: Re: Finding missing elements in a sequence (code) by pike
in thread Finding missing elements in a sequence (code) by deprecated

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