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For me, the gold standard of these libraries is Apache POI and NPOI. Porting to Rust would be perfectly possible, but it would be _a lot_ of work. Until you sup

by moomin 9y ago

For me, the gold standard of these libraries is Apache POI and NPOI. Porting to Rust would be perfectly possible, but it would be _a lot_ of work. Until you support that level of functionality, it's pretty much irrelevant what your "performance" is. You can always improve performance by dropping features.

TAForObvReasons 9y ago
POI doesn't have full format coverage e.g. calamine supported the Excel 2007+ XLSB format but POI only recently started to support it.
merb 9y ago
actually apache poi is extremely slow while reading/writing large excel files. so there might be the need for some libraries to process them fast.
- jontro 9y ago
  The streaming versions of poi (SXSSF) should be really fast if you're working with large documents.
  - merb 9y ago
    only if you know the column size ahead of time. and it's still slower than other streaming solutions and at some point it buffers to disk.