I've been thinking about this too, although I idea I had was for a
default field.
List( > 5 ) from collect( Bus( color == "red" ) )
So we could define default fields that can be used in the way you said.
Open a jira and we'll consider this for the next major release.
Mark
Godmar Back wrote:
If a fact contains a single field, it would be nice to be able to
express a constraint on the value of that field without having to know
its name, e.g.:
Cheese ("stilton")
which would be equivalent to
Cheese (type == "stilton")
if Cheese contained only one field, and which would be a compile-time
error otherwise.
A similar convenience syntax is used, for instance, for Java 5
annotations. Instead of having to say @Retention(value =
RetentionPolicy.RUNTIME) it can be abbreviated
@Retention(RetentionPolicy.RUNTIME) since this annotation only has a
single field.
- Godmar
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