unpack or sprintf to get the hex digits. The substitution operator to match the hex digits, prepending each pair with the literal '\x'. 

my $string = "39860000N000";

my $hexlen = sprintf( '%4.4x', length $string ) =~ s/ ( \p{Hex}{2} ) /
+\\x$1/grx;

print "Length of ($string) in hex: ($hexlen)\n";

[download]

In older versions of Perl that didn't have the /r flag you would probably want to break that into a couple of statements (and may still wish to do so for clarity's sake):

my $string = '39860000N000';
my $hexlen = sprintf '%4.4x', length $string;
$hexlen =~ s/  ( \p{Hex}{2} ) /\\x$1/gx;
print "Length of ($string) in hex: ($hexlen)\n";

[download]

Dave

In reply to Re: Convert to Hexadecimal by davido
in thread Convert to Hexadecimal by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.