Re^3: zero fill with pack

what is the significance of the ", 0," in the "pack('NN', 0, $_)" statement?

The value for the first "N".

Q=654848
-----------------------
00 00 00 00 00 09 fe 00
----------- -----------
N=0         N=654848
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I also need to pad the above value with two spaces, i.e., "00 00 00 00 00 09 fe 00 20 20"

More concisely, you want to add two spaces. pack:

C  An unsigned char (octet) value.
A  A text (ASCII) string, will be space padded.
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pack('NN CC', 0, $_, ord(' '), ord(' '))
pack('NN CC', 0, $_, 0x20, 0x20)
pack('NN A2', 0, $_, '  ')
pack('NN n',  0, $_, 0x2020)
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Re^4: zero fill with pack by Spooky (Beadle) on Jun 23, 2010 at 16:54 UTC
AWESOME ikegami - Thanks!!	[reply]
Re^4: zero fill with pack by Spooky (Beadle) on Jun 25, 2010 at 13:21 UTC
ikegami - I found out I need to be able to handle one or two bytes worth of data adding nine or eight spaces: e.g., 00 20 20 20 20 20 20 20 20 20 or 00 00 20 20 20 20 20 20 20 20 Is there something smaller than an unsigned short (16bit)? I'm trying to figure out the correct pack template to use for the above examples.	[reply]
Re^5: zero fill with pack by Spooky (Beadle) on Jun 25, 2010 at 15:28 UTC
ikegami - I think I figured it out for myself using the "i" and "n" templates....	[reply]