Bingo. Thanks.

That "Range Operators" page I have now read in my console via perldoc -f ..

It dawned on me after posting that the first condition is never true and I came up with 

$ perl  -le " print for grep { my $what = scalar($Q++==0 ..($_ eq q{Q}
+)); warn $what; $what } qw{ a b c Q r s }; "
1 at -e line 1.
2 at -e line 1.
3 at -e line 1.
4E0 at -e line 1.
Warning: something's wrong at -e line 1.
Warning: something's wrong at -e line 1.
a
b
c
Q

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In reply to Re^2: grep flip flop (range operator) by Anonymous Monk
in thread grep flip flop (range operator) by Anonymous Monk

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