Andrew Rucker Jones created LANG-1376:
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Summary: Iterable classes derived from Range for incremental types
Key: LANG-1376
URL: https://issues.apache.org/jira/browse/LANG-1376
Project: Commons Lang
Issue Type: Improvement
Components: lang.*
Affects Versions: 3.7
Reporter: Andrew Rucker Jones
I have a use case for deriving a class from Range with Integer as its parameter
and iterating over all integers in the range. In fact, in my use case I have a
List<Range<Integer>>, and would love to combine them easily using Commons
Collection's LazyIteratorChain to iterate over all integers in all of the
fields. I can't do this because Range is declared final, so I wrote my own
Iterator in a wrapping class. It seems to me, though, that I might not be the
only one who would think it useful to iterate over a Range as long as the Range
is a type that can be incremented.
Perhaps one could derive classes like IntegerRange, ShortRange, and LongRange
and possibly even BigDecimalRange that implement Iterable.
If the project is interested in my suggestion, I would be willing to submit a
patch.
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