Currently, the Default Choice ("*") sets initial Property values for all Choices. There is no way to make use of Implicit Defaults if a Default Choice is used, because Implicit Defaults are overridden by Default data.
If we would have a dedicated Choice Type (name TBD) which only applies to Choices that are not defined, Implicit Defaults would still apply.
For example:
*(+m1) C2(+m2)
will use the +m1 for both C1 (assuming that this is the Choice that the Default applies to) and C2. What we really wanted was: Use +m2 for C2 and +m1 for all other Choices. And use Implicit Defaults, i.e. -m2 for C1, -m1 for C2. But as * overrides these Implicit Defaults, this does not work as desired. To fix this we need to use *(+m1 -m2) C2(-m1 +m2), which is longer than desired.
The new Choice to be implemented would only apply to all undefined Choices, but not act as Default for all other Choices. So:
?(+m1) C2(+m2)
would apply the +m1 to existing other Choices (C1 here) that are not defined for assignment, but would not apply the +m1 as Default value to the m1 Property in the C2 Choice.
markh-de
commented
1 month ago
Currently, the Default Choice ("*") sets initial Property values for all Choices. There is no way to make use of Implicit Defaults if a Default Choice is used, because Implicit Defaults are overridden by Default data.
If we would have a dedicated Choice Type (name TBD) which only applies to Choices that are not defined, Implicit Defaults would still apply.
For example:
*(+m1) C2(+m2)will use the+m1for bothC1(assuming that this is the Choice that the Default applies to) andC2. What we really wanted was: Use+m2forC2and+m1for all other Choices. And use Implicit Defaults, i.e.-m2forC1,-m1forC2. But as*overrides these Implicit Defaults, this does not work as desired. To fix this we need to use*(+m1 -m2) C2(-m1 +m2), which is longer than desired.The new Choice to be implemented would only apply to all undefined Choices, but not act as Default for all other Choices. So:
?(+m1) C2(+m2)would apply the+m1to existing other Choices (C1here) that are not defined for assignment, but would not apply the+m1as Default value to them1Property in theC2Choice.Comments welcome.