This glob is really cool. When I posted my request I was just hoping to see something of this sort popping up.
In your latest try
map{my$a=$_;map$_.$a,'a'..'h'}1..8  # 34
you managed to squeeze my best one, which is 50, but can be shrinked down to 40: 
my @map2_ar = map{my$r=$_;map{$_.$r}('a'..'h')}(1..8);
#             123456789_123456789_123456789_1234567890 (40)

[download]
just by removing the () and {}!
Thanks for the tips.
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In reply to Re: Re: Filling an array. (Golf challenge?) by gmax
in thread Filling an array. (Golf challenge?) by gmax

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