clean way to make array a 2d array

Question

Looking for a cleaner (possibly one liner) way to write the following

my $spec_2d = ( );
foreach ( @spec ) {
  $spec_2d[$_][0] = $spec[$_];
}
@spec = @spec_2d;

Basically I'm making an array an array of arrays

mpapec · Answer 1 · 2013-05-13 17:31:26Z

up vote 2 down vote

@spec_2d[@spec] = map [ $spec[$_] ], @spec;

but judging from the subject I think you want this,

my @spec_2d = map [ $_ ], @spec;

edited May 13 at 17:31

answered May 10 at 19:53

mpapec
1763

1 Answer