How do Perl FIRSTKEY and NEXTKEY work
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Published on 2010-06-09T23:33:43Z
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Tie::Hash has these:
sub FIRSTKEY { my $a = scalar keys %{$_[0]}; each %{$_[0]} }
sub NEXTKEY { each %{$_[0]} }
NEXTKEY takes two arguments, one of which is the last key but that arg is never referenced?
The various Tie docs don't shed any light on this other than this in perltie:
my $a = keys %{$self->{LIST}}; # reset each() iterator
looking at the doc for each doesn't add to this.
What's going on?
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