1.NSNumber *testNumber = @123;
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF = 123"];
if ([predicate evaluateWithObject:testNumber]) {
NSLog(@"testString:%@", testNumber);
}
2.NSNumber *testNumber = @123;
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF BETWEEN {100, 200}"];
if ([predicate evaluateWithObject:testNumber]) {
NSLog(@"testString:%@", testNumber);
} else {
NSLog(@"不符合条件");
}
3.NSArray *testArray = @[@1, @2, @3, @4, @5, @6];
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF > 2 && SELF < 5"];
NSArray *filterArray = [testArray filteredArrayUsingPredicate:predicate];
NSLog(@"filterArray:%@", filterArray);
4.NSArray *filterArray = @[@"ab", @"abc"];
NSArray *array = @[@"a", @"ab", @"abc", @"abcd"];
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"NOT (SELF IN %@)", filterArray];
NSLog(@"%@", [array filteredArrayUsingPredicate:predicate]);
5.ZLPersonModel *sunnyzl = [ZLPersonModel personWithName:@"sunnyzl" age:29 sex:ZLPersonSexMale];
ZLPersonModel *jack = [ZLPersonModel personWithName:@"jack" age:22 sex:ZLPersonSexMale];
// 首先我们来看一些简单的使用
// 1.判断姓名是否是以s开头的
NSPredicate *pred1 = [NSPredicate predicateWithFormat:@"name LIKE 's*'"];
// 输出为：sunnyzl:1, jack:0
NSLog(@"sunnyzl:%d, jack:%d", [pred1 evaluateWithObject:sunnyzl], [pred1 evaluateWithObject:jack]);
// 2.判断年龄是否大于25
NSPredicate *pred2 = [NSPredicate predicateWithFormat:@"age > 25"];
// 输出为：sunnyzl的年龄是否大于25：1, jack的年龄是否大于25：0
NSLog(@"sunnyzl的年龄是否大于25：%d, jack的年龄是否大于25：%d", [pred2 evaluateWithObject:sunnyzl], [pred2 evaluateWithObject:jack]);
6.- (BOOL)checkPhoneNumber:(NSString *)phoneNumber
{
NSString *regex = @"^[1][3-8]\\d{9}$";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [pred evaluateWithObject:phoneNumber];
}
7.（有点瑕疵）- (BOOL)checkSpecialCharacter:(NSString *)string
{
NSString *regex = @"[`~!@#$^&*()=|{}':;',\\[\\].<>/?~！@#￥……&*（）——|{}【】‘；：”“'。，、？]";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [pred evaluateWithObject:string];
}
8.NSMutableArray *arrayM = [@[@20, @40, @50, @30, @60, @70] mutableCopy];
// 过滤大于50的值
NSPredicate *pred1 = [NSPredicate predicateWithFormat:@"SELF > 50"];
[arrayM filterUsingPredicate:pred1];
NSLog(@"arrayM:%@", arrayM);
NSArray *array = @[[ZLPersonModel personWithName:@"Jack" age:20 sex:ZLPersonSexMale],
[ZLPersonModel personWithName:@"Rose" age:22 sex:ZLPersonSexFamale],
[ZLPersonModel personWithName:@"Jackson" age:30 sex:ZLPersonSexMale],
[ZLPersonModel personWithName:@"Johnson" age:35 sex:ZLPersonSexMale]];
// 要求取出包含‘son’的元素
NSPredicate *pred2 = [NSPredicate predicateWithFormat:@"name CONTAINS 'son'"];
NSArray *newArray = [array filteredArrayUsingPredicate:pred2];
NSLog(@"%@", newArray);
9.NSArray *filterArray = @[@"ab", @"abc"];
NSArray *array = @[@"a", @"ab", @"abc", @"abcd"];
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"NOT (SELF IN %@)", filterArray];
NSLog(@"%@", [array filteredArrayUsingPredicate:predicate]);
10.NSArray *array = @[[ZLPersonModel personWithName:@"Jack" age:20 sex:ZLPersonSexMale],
[ZLPersonModel personWithName:@"Rose" age:22 sex:ZLPersonSexFamale],
[ZLPersonModel personWithName:@"Jackson" age:30 sex:ZLPersonSexMale],
[ZLPersonModel personWithName:@"Johnson" age:35 sex:ZLPersonSexMale]];
// 定义一个property来存放属性名，定义一个value来存放值
NSString *property = @"name";
NSString *value = @"Jack";
// 该谓词的作用是如果元素中property属性含有值value时就取出放入新的数组内，这里是name包含Jack
NSPredicate *pred = [NSPredicate predicateWithFormat:@"%K CONTAINS %@", property, value];
NSArray *newArray = [array filteredArrayUsingPredicate:pred];
NSLog(@"newArray:%@", newArray);
// 创建谓词，属性名改为age，要求这个age包含$VALUE字符串
NSPredicate *predTemp = [NSPredicate predicateWithFormat:@"%K > $VALUE", @"age"];
// 指定$SUBSTR的值为 25 这里注释中的$SUBSTR改为$VALUE
NSPredicate *pred1 = [predTemp predicateWithSubstitutionVariables:@{@"VALUE" : @25}];
NSArray *newArray1 = [array filteredArrayUsingPredicate:pred1];
NSLog(@"newArray1:%@", newArray1);
// 修改 $SUBSTR的值为32， 这里注释中的SUBSTR改为$VALUE
NSPredicate *pred2 = [predTemp predicateWithSubstitutionVariables:@{@"VALUE" : @32}];
NSArray *newArray2 = [array filteredArrayUsingPredicate:pred2];
NSLog(@"newArray2:%@", newArray2);