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POTrying to filter NSMutableArray with NSPredicate and getting error
 

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  1. POTrying to filter NSMutableArray with NSPredicate and getting error
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    <p>I'm trying to filter the results of a list of employee contacts that I keep in my app but am getting the following error : 'Can't use in/contains operator with collection LAST (not a collection)'</p> <p>I've tried several variations with the NSPredicate command, self, self.last, employee.last, last == 'smith' (this one doesn't generate an error but doesn't return any results). </p> <pre><code>NSMutableArray *employeesList = [[NSMutableArray alloc] init]; Person2 *employee = [[Person2 alloc] init]; employee.first = @"bob"; employee.last = @"black"; [employeesList addObject:employee]; employee = [[Person2 alloc] init]; employee.first = @"jack"; employee.last = @"brown"; [employeesList addObject:employee]; employee = [[Person2 alloc] init]; employee.first = @"george"; employee.last = @"smith"; [employeesList addObject:employee]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"last contains[cd] %@", @"black"]; NSArray *filteredKeys = [employeesList filteredArrayUsingPredicate:predicate]; NSLog(@"filtered : %@",filteredKeys); </code></pre> <p>[person2.h]</p> <pre><code>@interface Person2 : NSObject { @private } @property (nonatomic, retain) NSString *first; @property (nonatomic, retain) NSString *last; + (Person2 *)personWithFirst:(NSString *)first andLast:(NSString *)last; @end </code></pre> <p>[person2.m]</p> <pre><code>#import "Person2.h" @implementation Person2 @synthesize first, last; - (id)init { self = [super init]; if (self) { } return self; } + (Person2 *)personWithFirst:(NSString *)first andLast:(NSString *)last { Person2 *person = [[Person2 alloc] init]; [person setFirst:first]; [person setLast:last]; return person; } - (NSString *)description { return [NSString stringWithFormat:@"%@ %@", [self first], [self last]]; } @end </code></pre>
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    1. USsonicbabbler
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    1. COhowz your employeesList look like ??? your array is object of array why you add multiple object in your array ?? its very bad
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      1. POTrying to filter NSMutableArray with NSPredicate and getting error
      1. USiPatel
    2. CO@iPatel what???
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      1. POTrying to filter NSMutableArray with NSPredicate and getting error
      1. USSteve Wilford
    3. COWhat are you trying to achieve? Filtering of the array based on last name matching, or are you trying to retrieve the last person in the array with the last name matching?
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      1. POTrying to filter NSMutableArray with NSPredicate and getting error
      1. USSteve Wilford
 

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