in this simple example. i am not able to figure what is the bitwise funtion doing:
my @subArray = grep { $_ & 1 } @array;
what is the significance of 1 here?
is this equivalent? { 1 & $_ }
does the EXPR inside grep's curly braces have to produce the grepped text or
just a true false value? i thought like in regular shell it produces whatever
it grepped.
thx.
