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meta: update current work on readme

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Todd 2017-09-14 19:38:50 -05:00
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@ -17,6 +17,24 @@ and .pptx).
prototype code is checked in but it will be reworked once docx/xlsx are
'finished'.
## Current Work
The current work being performed is the implementation of a spreadsheet formula
parser and evaluator. Some initial progress has been made, but there is a long
way to go.
The intent is to get the vast majority of formulas working. The data in "A
Grammar for Spreadsheet Formulas Evaluated on Two Large Datasets - Efthimia
Aivaloglou, et al.", suggests that:
> (1) most Excel formulas are simple, however formulas with more than 50 functions or operations exist
> (2) almost all formulas use data from other cells, which is often not local, and
> (3) a surprising number of referring mechanisms are used by less than 1% of the formulas.
From this, it appears that we can quickly approach a point of diminishing
returns by implementing the most common formula features, saving others for
when/if users request it.
## Installation ##
go get baliance.com/gooxml/