objective c - Calculate Days Between Dates, Ignoring Certain Weekdays -

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i developing scheduling application, , part of events repeat, say, daily in given schedule. schedule 'active' on days—think of work week, saturdays , sundays nothing happens.

i'd calculate number of consecutive days between 2 dates, excluding weekdays. have method uses nscalendar this, ignoring excluded days, did not see methods on (or related classes) that'd allow me ignore days.

+ (nsinteger) okdaysbetweendate:(nonnull nsdate *) fromdatetime                         anddate:(nonnull nsdate *) todatetime {     nsdate *fromdate;     nsdate *todate;      nscalendar *calendar = [nscalendar currentcalendar];      [calendar rangeofunit:nscalendarunitday startdate:&fromdate                  interval:null fordate:fromdatetime];     [calendar rangeofunit:nscalendarunitday startdate:&todate                  interval:null fordate:todatetime];      nsdatecomponents *difference = [calendar components:nscalendarunitday                                                fromdate:fromdate todate:todate options:0];      return [difference day]; }

a possibility have thought of checking how many weeks between 2 dates, multiplying number of excluded days week, , subtracting end result, doesn't seem particularly clean me.

is there better, more cocoa-y (perhaps using nscalendar or friends) way of implementing this?

thanks.


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