Re^2: making presence/absence table from a hash of arrays

[Anonymous Monk]

in reply to Re: making presence/absence table from a hash of arrays
in thread making presence/absence table from a hash of arrays

The grep can be simplified with a smart match:

for my $key (sort keys %hash) {
    say "$key = ", join ' ', map $_ ~~ $hash{$key} ? 1 : 0, @array;
}