Can you avoid magic values when using default values in macro parameters?

[vanvoorden (Rick van Voorden)]

[SE-0382] Default arguments for macros and macro implementations

Hello, I've been finalizing the implementation of SE-0382 "Expression Macros", and hit on an interesting design question related to default arguments. The language semantics of default arguments are the same as for functions. So let's say we have a macro m1 with one parameter that has a default: @freestanding(expression) macro m1(bestNumber: Int = 17) Now, we go ahead and use this macro… maybe without arguments, because we can: #m1 Now, how should we communicate the use of the default argu…

This is still a good question. The Apple SwiftData Query family of Macros have some arguments with default parameters (like SortOrder). I'm guessing this question was brought up internally. I'm not sure if the external community has any consensus about a best practice… but I hope we can hear some more discussion on this.