Hi, I'm testing out the OpenXML SDK with IronRuby (0.9.2). Turns out it's full of generics in there, a good play field.
Here I'm trying to use the API to retrieve a list of sheets in an existing xslx. I'm having a hard-time understanding why I can't call "b.first" in the next snippet (full version at http://gist.github.com/239555): doc = SpreadsheetDocument.open('docs/single-cell.xlsx', false) a = doc.workbook_part.workbook.method(:get_first_child).of(Sheets).call puts a # -> DocumentFormat.OpenXml.Spreadsheet.Sheets b = a.method(:elements).of(Sheet).call puts b # -> DocumentFormat.OpenXml.OpenXmlElementList+<OfType>d__0`1[DocumentFormat.OpenXml.Spreadsheet.Sheet] # b.first or anything similar fails * * It turns out that b.methods shows a "to_a" method is available, then I can do : puts b.to_a.first # woot! # -> DocumentFormat.OpenXml.Spreadsheet.Sheet So my questions are: - why can't I call b.first ? (maybe there's something obvious I didn't see - I assume it's probably that) - are there better ways of writing this ? And if you are interested to follow (I really need to wrap some ruby sugar around all this to make it easier to work with), I'll push my experiments here: http://github.com/thbar/openxml-labs thanks, Thibaut -- http://www.learnivore.com
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