Vtyjkyuk

Can I create an Apex.Stack for any type?

If I will do:

Apex.Stack stackForIds = new Apex.Stack();

Then I am able to put id values in such a stack:

stackForIds.push(anId);

Here is how I tried to put an SObject into my stack:

Apex.Stack<SObject> stackForSObjects= new Apex.Stack<SObject>();
stackForSObjects.push(new SObject(Id = anId));

And it did not work out. I am getting an error:

Cannot resolve symbol Apex.Stack<SObject>

There seems to be no documentation on the Apex.Stack, so I would be grateful for it. Otherwise I am asking for help to figure out whether or not Apex.Stack is able to work with an arbitrary type.

As AFIK there is no such class in the platform's API, look in your own code base for a class called Apex that has an inner class called Stack.

If you want to support other types, you will have to add additional methods for those and generalize the implementation. Other languages include better mechanisms for this situation - see e.g. Java's Generic Types.

Though as this Apex.Stack code probably does very little, changing the method signatures and implementation to use Object rather than Id would probably be the best way to go as then all types would be supported. But casts would be needed when values are popped.

The Apex.Stack class has known limitations and bugs, which is why it was never formally released in the documentation. Do not use it if you care about the stability of your code.