Collection Classes

X++ contains two compound data types: arrays and containers. They are useful
for aggregating values of simpler data types. However, you cannot store objects
in arrays or containers. The Microsoft Dynamics AX collection classes have been
designed for storing objects.
The following collection classes are available:

• List

• Map

• Set

• Array

• Struct

The following classes also aide in aggregating data:

• RecordSortedList

• RecordInsertList
 
Best Regards,
Hossein Karimi