library__id
#id
id:enumerate:key:prefix(expr)
Evaluates expr as a list of elements, then adds a feature key to each element. The value of the feature is the index of the element in the list prepended with prefix.
id:enumerate:key(expr)
Evaluates expr as a list of elements, then adds a feature key to each element. The value of the feature is the index of the element in the list.
id:enumerate:key:prefix(expr, start)
Evaluates expr as a list of elements, then adds a feature key to each element. The value of the feature is the index of the element in the list (starting at start) prepended with prefix.
id:enumerate:key(expr, start)
Evaluates expr as a list of elements, then adds a feature key to each element. The value of the feature is the index of the element in the list (starting at start).
id:enumerate0:key:prefix(expr)
Evaluates expr as a list of elements, then adds a feature key to each element. The value of the feature is the index of the element in the list (starting at 0) prepended with prefix.
id:enumerate0:key(expr)
Evaluates expr as a list of elements, then adds a feature key to each element. The value of the feature is the index of the element in the list (starting at 0).
random:unique()
Returns an integer that is unique for the context element.
random:uuid()
Returns a random UUID string.