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Aitor Bermejo San Jose
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Xojo 2019 Release 3.1


Xojo 2019 Release 3.1: What's New and Improved?




Xojo is a cross-platform development tool that allows you to create native applications for desktop, web, mobile, and Raspberry Pi. Xojo 2019 Release 3.1 is the latest version of Xojo, which was released on January 23rd, 2020. This version has important improvements to Xojo 2019 Release 3, which was released on December 11th, 2019. In this article, we will review some of the major changes and bug fixes in Xojo 2019 Release 3.1.


iOS




Xojo 2019 Release 3 introduced several new features for iOS development, such as iOS 13 Dark Mode support, iOS Blur effects, iOS SF Symbol image access, and iOS Text Area border settings. Xojo 2019 Release 3.1 fixed some of the issues and regressions that were reported with these features. For example, the ColorGroup class now has an Operator_Compare method that allows you to compare the current state with a Color value. Also, the iOSTextArea class no longer overflows its bounds when the border is set to None or Rectangular.


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SQLite




Xojo 2019 Release 3 updated SQLite to version 3.29.0, which added support for window functions, generated columns, and more. Xojo 2019 Release 3.1 improved the performance and stability of SQLite by fixing some memory leaks and crashes that occurred when using the DatabaseRow and DatabaseColumn classes. These classes were introduced in Xojo 2019 Release 2 as a replacement for the RecordSet class, which is now deprecated. The DatabaseRow class now has a Column method that takes a Variant assignment, which is faster than using the DatabaseColumn object.


String




Xojo 2019 Release 3 made some changes and improvements to the String class, such as adding new methods like BeginsWith, EndsWith, IndexOfNth, LastIndexOfNth, SplitNth, and more. Xojo 2019 Release 3.1 fixed some bugs and inconsistencies that were found with these methods. For example, the String.IndexOf method now properly matches its signature in certain cases (usually when you leave off the startPosition, but include ComparisonOptions or Locale). Also, the Join global method is now marked as deprecated, with String.FromArray as its replacement.


DateTime




Xojo 2019 Release 3 introduced the DateTime class as a replacement for the Date class, which is now deprecated. The DateTime class is more modern and consistent than the Date class, and supports nanosecond precision and time zones. Xojo 2019 Release 3.1 made some improvements to the DateTime class, such as adding a new constructor that takes a TimeZone parameter. Also, the DateTime class no longer reports a Nil TimeZone in some cases (depending on how it was created).


Other Changes




Xojo 2019 Release 3.1 also included some other changes and bug fixes that affect various areas of Xojo. For example, the System.VersionData class was added for getting OS version information. The ListBox class now supports iterators. The Graphics.ClearRect method was deprecated in favor of Graphics.ClearRectangle. The SerialConnection.Connect method no longer raises an Error event, it should only raise an Exception. The FolderItem.Visible property no longer inverts the visibility on macOS. And many more.


Conclusion




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