Github user afs commented on a diff in the pull request:
https://github.com/apache/jena/pull/90#discussion_r35813136
--- Diff: jena-base/src/main/java/org/apache/jena/atlas/iterator/Iter.java
---
@@ -29,6 +29,14 @@
import org.apache.jena.atlas.lib.Closeable ;
import org.apache.jena.atlas.lib.Sink ;
+/**
+ * Iter provides utilities for working with {@link Iterator}s.
+ *
+ * Iter should never be used as a return type or parameter type in the
public contract of a class. It is only to be used
+ * inside implementation code and is instantiated only to allow
method-chaining as part of a calculation.
--- End diff --
What do you mean by "difference"? Can they do the same things? Yes. Why
are there two? History (Iter came along later for use in SDB and TDB and works
on iterators; ExtendedIterator works on ExtendedIterator iterators and appears
in an important API).
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