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Re: Clarity in parsing fixed length data.

by hv (Parson)
on Aug 11, 2006 at 10:52 UTC ( #566780=note: print w/replies, xml ) Need Help??


in reply to Clarity in parsing fixed length data.

I find unclear the way the two lists are interleaved. In a style similar to that hinted at in GrandFather's comment, I'd tend to write this as list of hashrefs:

my @TEST_REC_PACK_FIELDS = ( { name => 'status', data => 'n' }, { name => 'time', data => 'n' }, { name => 'date', data => 'N' }, { name => 'code', data => 'a16' }, { name => 'msid', data => 'a10' }, );

At this point you can just as easily construct the list of fieldnames and the unpack string, but it is more self-documenting, and you can easily extend the structures later if you need to start adding validation callbacks and the like.

Hope this helps,

Hugo

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[GotToBTru]: I
[GotToBTru]: ve been looking at a document we have been sending to a customer for years now
[MidLifeXis]: We don't, at least in this case ;-)
[GotToBTru]: and it includes a reference number that I didnt recognize
[GotToBTru]: I had to dig into the code to find out where it came from .. and it makes no sense
[GotToBTru]: so I emailed my contact asking if we could just stop sending it .. I'm afraid she is going to ask "what is that anyway?"
[MidLifeXis]: heh.
[MidLifeXis]: Most likely it is a code that some undocumented system, hidden behind layers of IT, deep in the bowels of the building under the machine room floor, reads that code to keep a presence switch from going off. :-b

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