Re: Help on walking lists of Swarm Collection

[Marcus G. Daniels]

>>>>> "WS" == William S Shu <address@hidden> writes:

WS> A person or mosquito may have a number of such populations (for
WS> whatever reason) and hence we put them in the person or mosquito's
WS> colonyList (the list of all population colonies it has).  When a
WS> person is bitten, a population (or part thereoff) may be
WS> transferred to the mosquito.

If a population is a thing that won't be duplicated within a host
(sounds like it), then I think you want this:

   id <Index> index = [colonyList begin: scratchZone];
   while ((population = [index next]))
     {
       if ([population isLeaving])
         {
           [colonyList remove: population];
           break;
         }
     }
   [index drop];

If you can anticipate how many populations there will be for a given run,
you might want to use an Array, with nil entries for absent populations.
(Each population would get a serial number starting from 0.)


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