Set maths operators

Tinderbox Icon

A range of operators to help use sets.

Unlike their same-named Export codes, these operators cannot use Group objects as the target of the operator. Instead they must explicitly target a named set attribute. Thus, count(child) is not valid - it would be necessary first to make a set of the target's children and then count that set. However, count($MySet) would work.

So, if a set attribute doesn't exist, use collect/collect_if to dynamically build a set.

The new operators are:

Up: Action Operator Types
Previous: Set creation operators   

[Last updated: 14 Dec 2009, using v5.0]

Google search aTbRef for:  

Licensed under Creative Commons Attribution-Noncommercial-Share Alike 3.0 License
[See aTbRef CC licence Attribution/Waiver info info]

Creative Commons License

Made with Tinderbox