Hi! I found a little syntax error in the stub file for the swift-scheduling exercise. The DeliveryDate method inside the SwiftScheduling.cs stub file mixes an expression-body arrow (=>) with a block body ({ }), which causes a compilation failure immediately after downloading the exercise.
The fix could be simply removing the => arrow, to stay consistent with how other exercises in the C# track are written.
Would you like me to submit a pull request with this fix, or would you prefer to handle it yourselves? Thanks!