BIND 10 #2432: define and implement base and libdns++ version of RRsetCollection

[BIND 10 Development]

#2432: define and implement base and libdns++ version of RRsetCollection
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            Reporter:  jinmei        |                        Owner:
                Type:  task          |  vorner
            Priority:  medium        |                       Status:
           Component:  libdns++      |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20130108
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  5             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |  loadzone-ng
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by muks):

 Replying to [comment:12 muks]:
 > As these iterator implementations are tied to the `RRsetCollectionBase`
 implementations,
 > I'm not sure how you can check for the valid implementation type in the
 base class.

 We can compare identical types though with `typeid`. Perhaps that's what
 you mean.

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Ticket URL: <http://bind10.isc.org/ticket/2432#comment:13>
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