http://www.perlmonks.org?node_id=685086


in reply to String to two dimensional array

sub string2matrix { 
    my( $x, $y, $s ) = @_; 
    die "Can't create $x x $y matrix from string length: ", length $s
        unless length( $s ) == $x * 2 * $y -1;

    return map{ 
        map{ [ split ] } $_ 
    } unpack "(A@{[ $x * 2 ]})*", $s; 
}

my $s = '0 X X X X X X X X 1 X X X X X X X X 2 X X X X X X X X 3 X X X
+ X X X X X 4 X X X X X X X X 5 X X X X X X X X 6 X X X X X X X X 7';;

my @a = string2matrix( 8, 8, $s );;

pp \@a;;
[
  [0, "X", "X", "X", "X", "X", "X", "X"],
  ["X", 1, "X", "X", "X", "X", "X", "X"],
  ["X", "X", 2, "X", "X", "X", "X", "X"],
  ["X", "X", "X", 3, "X", "X", "X", "X"],
  ["X", "X", "X", "X", 4, "X", "X", "X"],
  ["X", "X", "X", "X", "X", 5, "X", "X"],
  ["X", "X", "X", "X", "X", "X", 6, "X"],
  ["X", "X", "X", "X", "X", "X", "X", 7],
]

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