Re: Nonlinear scaling - could symbols help solve this?


#1

M. Edward (Ed) Borasky wrote:

A CSV file is (usually) very much like a database table. And an XML
document is (usually) a tree. A hash of hashes of arrays is an
inefficient way to store a tree.

You need an algorithm and a data structure tuned to the algorithm and
the data. I would recommend starting from the required output and
working backwards to the input data. Have a look at the Ruby libraries
devoted to dealing with XML documents, and the Ruby libraries devoted to
dealing with CSV files. Let the XML libraries build the data structure,
rather than creating your own.

Thanks for the response.

You are right that my CSV file is very much like a database table (used
to load database tables). However, my XML document is not so tree-like
and actually fits pretty well into a hash of hashes of arrays. I am
looking into the XML libraries - seems like a much neater way of writing
out XML.

Jeremy


#2

Jeremy H. wrote:

Thanks for the response.

You are right that my CSV file is very much like a database table (used to load database tables). However, my XML document is not so tree-like and actually fits pretty well into a hash of hashes of arrays.
A non-tree-like XML document? Are you required by the downstream user
to create XML?


M. Edward (Ed) Borasky

http://linuxcapacityplanning.com