ios - Filter NSArray of NSNumber with NSArray of NSNumber with NSPredicate -

i have custom class:

@interface mymodel : nsobject  @property (nonatomic,strong) nsstring *id_name; @property (nonatomic,strong) nsarray *genres;  @end 

the genres array array of nsnumbers. fill array mymodel object, example:

mymodel *m = [[mymodel alloc] init]; m.id_name = @"2345"; m.genres = [nsarray arraywithobjects:[nsnumber numberwithint:3],[nsnumber numberwithint:5],nil];  mymodel *m2 = [[mymodel alloc] init]; m2.id_name = @"259"; m2.genres = [nsarray arraywithobjects:[nsnumber numberwithint:7],[nsnumber numberwithint:10],nil];  mymodel *m3 = [[mymodel alloc] init]; m3.id_name = @"25932as"; m3.genres = [nsarray arraywithobjects:[nsnumber numberwithint:7],[nsnumber numberwithint:10],[nsnumber numberwithint:15],nil];  myarray = [nsarray arraywithobjects:m,m2,m3,nil]; 

now want filter myarray such genres contained within elements of array:

nsarray *a = [nsarray arraywithobjects:[nsnumber numberwithint:7],[nsnumber numberwithint:10],nil]; 

so, myarray, after filtering, should contain objects m2 , m3. can nspredicate? if so, how? or there way?

to find objects have at least one genre in given array a, use

[nspredicate predicatewithformat:@"any genres in %@", a]; 

to find objects have all genres in given array, subquery needed:

[nspredicate predicatewithformat:@"subquery(genres, $g, $g in %@).@count = %d", a, [a count]]; 

(the idea check if number of genres in given array equal size of array.)