On 10/3/10 2:21 PM, Luc Maisonobe wrote:
Hi all,I have fixed MATH-391. Now vectors can be built with 0 length using several constructors. There is however one remaining problem, for Field-based vectors (i.e. ArrayFieldVector). For these vectors, we need to store the field in addition to the vector components. For example a Fraction Vectors also stores a reference to FractionField. When a vector is built from a non empty array, the field can be retrieved from the first element, using d[0].getField(). Since 0 length vectors are now allowed, I add to create additional constructors that pass the field as an additional constructor parameter. This is much cleaner than the previous choice. Since the field is mainly a compile-time constant for a given program (people now when they use Fraction or Complex or Dfp), I would like to deprecate the former constructors in 2.2 and remove them in 3.0. This means someone building a Fraction vector would use: Fraction[] data = ...; ArrayFieldVector<Fraction> vector = new ArrayFieldVector<Fraction>(FractionField.getInstance(), data, false); instead of: Fraction[] data = ...; ArrayFieldVector<Fraction> vector = new ArrayFieldVector<Fraction>(data, false); which don't work for zero-length. What do you think about this proposed deprecation ?
+1 - nice solution Phil
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