This is a family of operators that help create sets or lists:
- collect_if(group,condition,attribute)
- collect(group,attribute)
- Dictionary.add(key, value)
- Dictionary.count
- Dictionary.empty
- Dictionary.extend(key, value)
- Dictionary.keys
- Dictionary.size
- dictionary(string)
- Dictionary["key"]
- find(query)
- links[(item|group)].kind.[linkType].attribute
- List/Set.avg
- List/Set.collect_if(label, condition, expression)
- List/Set.collect(label, expression)
- List/Set.first
- List/Set.last
- List/Set.lookup("key")
- List/Set[N]
- values([group,]attribute)