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Library
Module
Module type
Parameter
Class
Class type
Library
Module
Module type
Parameter
Class
Class type
Data are divided into stores. Create one store for your project, where you will save all your data.
make_persistent store name default
find a persistent value named name
in store store
from database, or create it with the default value default
if it does not exist.
Same as make_persistent but the default value is evaluated only if needed