Re: convert to binary number

[choroba]

You can use the %b template in printf:

my $int = 123;
printf "%b\n", $int;

Update: Another option is to use pack + unpack.

my $int = 123;
say unpack "B*", pack "n", $int;

[dbander]

If you need that binary sequence stored in a string value, you could use sprintf like so:

my $int = 123;
my $bin = sprintf "%b", $int;
my $fix = sprintf "%08b", $int;
print "Integer $int is binary $bin (eight-digit binary: $fix)\n";