mirror of
https://github.com/PHPOffice/PhpSpreadsheet.git
synced 2026-09-24 09:09:22 +00:00
oleibman
f1ce95eaa4
In issue #4557, the user complains, with some justification, about the way Excel handles certain calculations. We are not able to help with that problem. However, the user also notes a problem in Shared/Date when `isDateTime` has to evaluate a cell whose calculated value is an array. This is solved by flattening the calculated result to a single value. It became obvious while working on this change that the code to set `instanceArrayReturnType` was kind of awkward. Simpler methods `returnArrayAsArray` and `returnArrayAsValue` are added to `Spreadsheet`. Even these started out a bit awkward because `Spreadsheet::calculationEngine` was defined as nullable, which really isn't true. It is allocated by the constructor, and never freed except in the destructor. It is no longer nullable.