Yes, you can drop all the parens when you switch to the ternary operator. And yes, it can be done as a loop, which also removes the 8-bit restriction:
$ cat 1129169.pl
#!/usr/bin/env perl
use 5.010; use strict; use warnings;
sub dec_to_bin {
my $dec = shift;
print "$dec : ";
unless( $dec =~ /^\d+$/ ){
say "Not a whole number!";
return;
}
my $x = 1; my $bin = '';
while(1){
my $bit = $dec & $x;
$bin = ($bit ? 1 : 0) . $bin;
$dec -= $bit;
last unless $dec;
$x <<= 1;
}
say $bin;
}
dec_to_bin($_) for @ARGV;
$ perl 1129169.pl 0 1 4 255 65536 abc
0 : 0
1 : 1
4 : 100
255 : 11111111
65536 : 10000000000000000
abc : Not a decimal number!
Aaron B.
Available for small or large Perl jobs and *nix system administration; see my home node.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|