ios - Filter dates which are earlier than today? -

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in application have list of nsdate instances. @ 1 point need seperate dates past today ie [nsdate date] (earlier morning 12) , have used logic below. feel there must better logic this, me if there better solution.

i pass date instance argument method return bool value corresponding requirement.

-(bool)checkifpast:(nsdate *)date {     nsdate *today=[nsdate date];     nsuinteger dateflags = nsyearcalendarunit|nsmonthcalendarunit|nsdaycalendarunit;     nscalendar *gregoriancalendar = [[nscalendar alloc] initwithcalendaridentifier:nsgregoriancalendar];     nsdatecomponents *components1=[gregoriancalendar components:dateflags fromdate:today];     nsdatecomponents *components2=[gregoriancalendar components:dateflags fromdate:date];     if (components2.day-components1.day<0) {         return yes;     }     else     {         return no;     } } 

bool checkiftodayorfuture(nsdate *date) {     nsdate *now = [nsdate date];     nsuinteger dateflags = nscalendarunitera | nscalendarunityear | nscalendarunitmonth | nscalendarunitday;     nscalendar *gregoriancalendar = [[nscalendar alloc] initwithcalendaridentifier:nsgregoriancalendar];     nsdatecomponents *components = [gregoriancalendar components:dateflags fromdate:now];     nsdate *midnight = [gregoriancalendar datefromcomponents:components];     return [date compare:midnight] == nsordereddescending; }

if have make lot of tests keep midnight around , compare: on of dates.

keep in mind result not constant. example, user might change timezone interval of "today" changes.


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