You might want to try using "special" variables to make your
life easier and/or more obfuscated. For example, don't use
@d. Use
@_ instead. This means
you can write
shift instead of
shift(@d).
You can use
$/, the newline separator, instead
of
\n. Similar to
@_, you could
use
$_ instead of
$d which gets
you tighter regular expressions. And lastly, instead of
making your for loop work like C code (
for ($n=1;$n < 21; $n++)),
you might try something like
for $n (1..@_). Note that
@_
is forced into scalar context, which translates to the
length, which is
20.
Here is what your code might turn into after these changes:
#!/usr/bin/perl
@_=(255,60,252,195,24,195,195,195,24,255,252,255,
216,195,192,195,112,195,192,195);for $n(1..@_){
$_ .=' '.unpack("B8",pack("v",shift));unless($n%4)
{s/0/ /g;print $_,$/;$_='';}}
Other thoughts include using the list nature of pack to simplify
the for loop. Also, the numbers
255,
195,
and
192 come up
multiple times in the data block. You might want to start with
a smaller data block and graft multiple copies of those numbers
into it. It might result in smaller code.
-Ted