Re^4: How to increment a MAC Address?

in reply to Re^3: How to increment a MAC Address?
in thread How to increment a MAC Address?

I did this:

  # clear separators to obtain a hex string
    $mac =~ s/://g;
  # convert hex string into a dec number
    my $dec = hex($mac);
  # revert into a hex string 
    $mac = sprintf("%012x", $dec+$add);
[download]

I don't see error here. I think it's used by context...

--
Marco Antonio
Rio-PM

Comment on Re^4: How to increment a MAC Address? Download Code

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Re^5: How to increment a MAC Address? by merlyn (Sage) on Jun 16, 2005 at 17:53 UTC
`# convert hex string into a dec number my $dec = hex($mac); # revert into a hex string $mac = sprintf("%012x", $dec+$add);` [download] My argument is with the word "dec" there. It's not decimal. It's just a number. In fact, it's more binary than it is decimal. {grin} The "hex" operator interprets a hex string or an octal string, converting them to a number. A number is an abstraction, without a numeric base, until it gets converted to a string again. Thus, you never really have a "decimal" number there. Just a number. Because you never printed it out. -- Randal L. Schwartz, Perl hacker Be sure to read my standard disclaimer if this is a reply.	[reply] [d/l]

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Re^5: How to increment a MAC Address?
by merlyn (Sage) on Jun 16, 2005 at 17:53 UTC

  # convert hex string into a dec number
    my $dec = hex($mac);
  # revert into a hex string 
    $mac = sprintf("%012x", $dec+$add);
[download]

The "hex" operator interprets a hex string or an octal string, converting them to a number. A number is an abstraction, without a numeric base, until it gets converted to a string again.

Thus, you never really have a "decimal" number there. Just a number. Because you never printed it out.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

[reply]
[d/l]

In Section Seekers of Perl Wisdom