I guess then:
sub delete_first(\%)
{
my $hash = shift;
keys %$hash;
my ($key, $value) = each %$hash;
delete $hash->{$key};
wantarray ? ($key, $value) : $key;
}
while (my $key = delete_first %hash)
{
do_stuff();
}
Would be safer. At least delete_first doesn't depend on the current state of the hash's iterator, and the iterator ( each) is still valid right after calling it.
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