How about returning an iterator in scalar context? For
example, XML::XPath (and a lot of the XML::* modules
for that matter) has a method findnodes() that
returns such:
if ($results->isa('XML::XPath::NodeSet')) {
return wantarray ? $results->get_nodelist : $results;
# return $results->get_nodelist;
}
The docs for Tie::Array::Iterable need some
corrections, and you don't actually do the tieing
... but here is an example with it:
#!/usr/bin/perl -l
use strict;
use warnings;
use Tie::Array::Iterable;
sub foo {
my @list = 0..9;
return wantarray ? @list : Tie::Array::Iterable->new(@list);
}
# access as a list
print for foo();
# or an iterator
my $iter = foo()->from_start();
print ($iter->value),$iter->next until $iter->at_end;
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