18:38 >perl -Mstrict -wE "foreach (my $RID) { say qq[\$RID = >$RID<]; }"
Use of uninitialized value $RID in concatenation (.) or string at -e line 1.
$RID = ><

18:43 >

##</code><code>##

18:45 >perl -Mstrict -wE "foreach (my @RID) { say 'okay'; }"

18:46 >

##</code><code>##

18:46 >perl -Mstrict -wE "foreach (my @RID = (undef)) { say 'okay'; }"
okay

18:51 >