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  1. or download this
    >perl -le"($x,$y)=map 0+$_,  @ARGV; print $x|$y;" 2 8
10

>perl -le"($x,$y)=map ''.$_, @ARGV; print $x|$y;" 2 8
:
  2. or download this
    my @nums = map 0+$_, split /,/;
  3. or download this
    >perl -e"use Devel::Peek; my $x=123; Dump($x);"
SV = IV(0x1826628) at 0x225350
...
  CUR = 3
  LEN = 4