I would have expected the following two snippets to have the same output:

# Simple arrays:
my @ary1 = ( 'a' .. 'e' );
my @ary2 = ( 0 .. 4 );
my $str = '';
$str .= $_ for @ary1, @ary2;
print $str;

# Array of arrays:
my @AoA = ( [ 'a' .. 'e' ], [ 0 .. 4 ] ); 
my $str2 = '';
$str2 .= @$_ for @AoA;
print $str2;

[download]

But the output from the first is:

abcde01234

while that from the second is:

55

Presumably, the concatenation operator is imposing scalar context in the second case (it's like if I'd done:

$str .= $_ for scalar @ary1, scalar @ary2;

in the first bit).

Wherein lies the difference?

TIA

dave

In reply to Dereferencing and context? by Not_a_Number

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