[progress Communities] [progress Openedge Abl] Forum Post: Re:...

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Bill Wood

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A Stack Object is indeed an Abstract Class so it can't be directly instantiated. See documentation.progress.com/.../index.html It is a Collection they had methods supporting Last-in, First-Out (LIFO) semantics. Implementations of the abstract class are necessary where the type of object in the stack is specified. You might want to create, for example, and ObjectStack. See documentation.progress.com/.../index.html Once created you can cast it as a "Stack" and use the Stack methods generically (or not).

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