Hi There,
I encountered a problem writing enumerator for my generic tree. The
enumerator class looks like this:
TTreapEnumerator = class
FStack: TStack;
FCurrent: TTreap.PNode;
public
constructor Create(ANode: TTreap.PNode);
destructor Destroy; override;
function MoveNext: Boolean;
property Current: TTreap.PNode read FCurrent;
end;
And the error message I got is:
/home/xrfang/git/fpcollection/src/units/treap.pas(363,45) Error:
Incompatible type for arg no. 1: Got
"THistogram.TTreap$Char$LongInt.PNode", expected "TTreap.PNode"
i.e. the enumerator expected a generic PNode, but the given node is a
specialized one. How to write enumerators for generic classes?
Thanks!
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