Essentially you want to keep all of the even-numbered array elements, and discard all of the odd ones. Something like this will do that: 
my $i = 1;
print join(" ",grep { $i++ % 2 } l()),"\n";

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In reply to Re: Apply function "keys" directly to function returning hash by sgifford
in thread Apply function "keys" directly to function returning hash by wirrwarr

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