objective c - Check duplicate property values of objects in NSArray -


i have nsarray containing objects size property.

how can check if nsarray has 2 objects same value size?

can like:

int = 0; (id item1 in myarray) {     nsdecimalnumber *size1 = [item1 size];      (id item2 in myarray) {         nsdecimalnumber *size2 = [item2 size];          if ([size1 isequal:size2]) {             ++;         }     } }  if (i > [myarray count]) {     nslog(@"duplicate sizes exist"); }

or there easier way?

use nscountedset. add objects counted set, , use countforobject: method find out how each object appears in array.

you can check link how-to-find-duplicate-values-in-arrays

hope helps you


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