Hello Wiet,



The empty statement has the functionality you want when the identifier to be emptied is a subset of AllIdentifiers, see the example below:



Suppose you want to empty the sets s_A, s_B ;



To do this, you first create a subset of AllIdentifiers as follows:







Subsequently in your model execute:







The empty statement will now empty the sets s_A and s_B.



When you want to empty the sets in a section or model, you can construct the subset of AllIdentifiers as follows:







Here modelName is the name of your model and in code it is a set that contains all identifiers declared below that set. You can use the name of any section in the model tree as an alternative. Allsets is a predeclared subset of AllIdentifiers, and contains the names of all declared sets. The * operator acts as intersection.





With kind regards,



Chris.

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Thanks, but this doesn't exactly answer my question.

I want to loop over and perform and action on all sets in the set self_declared_sets where...







And then I want to skip a set if the name of that set matches a string, e.g. "self_declared_sets" or "myBuildings".



In your answer the sets on which an action needs to be performed are specified. I need to specify the sets on which no action needs to be performed.



Maybe I need to create a subset first in which some elements of the original set are excluded.

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Thanks for the clarification.



Indeed, you'll need to create an additional subset. Assuming that self_declared_sets is declared as:







You can create a subset thereof as follows







And then fill it along the following lines:

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