NSPredicate使用(5)——集合运算

NSArray *filterArray = @[@"ab", @"abc"];
NSArray *array = @[@"a", @"ab", @"abc", @"abcd"];

// 元素值未包含
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"NOT (SELF IN %@)", filterArray];
NSArray *resultArray = [array filteredArrayUsingPredicate:predicate];
NSLog(@"未包含在集合中的数组：%@", resultArray);

2018-03-05 15:42:45.991 DemoNSPredicate[2472:315182] 未包含在集合中的数组：(
    a,
    abcd
)
2018-03-05 15:42:45.992 DemoNSPredicate[2472:315182] 元素值大于某个值：(
    3,
    4,
    5
)

// 判断元素值大于等于某个值
array = @[@"2", @"3", @"4", @"5"];
predicate = [NSPredicate predicateWithFormat:@"integerValue >= %@", @(3)];
resultArray = [array filteredArrayUsingPredicate:predicate];
NSLog(@"元素值大于某个值：%@", resultArray);

2018-03-05 15:42:45.992 DemoNSPredicate[2472:315182] personArray = (
    "",
    "",
    "",
    "",
    "",
    "",
    "",
    "",
    "",
    ""
)

// 判断元素值
NSMutableArray *personArray = [[NSMutableArray alloc] init];
for (int i = 0; i < 10; i++)
{
        PersonModel *person = [[PersonModel alloc] init];
        person.name = [NSString stringWithFormat:@"name_%@", @(i)];
        person.age = @(arc4random() % 50 + 10 + i);
        
        [personArray addObject:person];
}
NSLog(@"personArray = %@", personArray);
array = [NSArray arrayWithArray:personArray];
    predicate = [NSPredicate predicateWithFormat:@"age >= %@", @(30)];
resultArray = [array filteredArrayUsingPredicate:predicate];
NSLog(@"resultArray = %@", resultArray);

2018-03-05 15:42:45.992 DemoNSPredicate[2472:315182] resultArray = (
    "",
    "",
    "",
    "",
    "",
    "",
    ""
)

PersonModel类

#import 

@interface PersonModel : NSObject

@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSString *address;
@property (nonatomic, strong) NSString *job;
@property (nonatomic, strong) NSNumber *age;

@end

#import "PersonModel.h"

@implementation PersonModel

@end