iOS:CHCSVParser&；预测？

我目前正试图使用CHCSVParser解析一个包含1500多个条目和8行的CSV文件。我成功地解析了整个文件，得到的是NSArray的NSArray字符串

例如，我得到的是：

Loading CSV from: (
        (
        Last,
        First,
        Middle,
        Nickname,
        Gender,
        City,
        Age,
        Email
    ),
        (
        Doe,
        John,
        Awesome,
        "JD",
        M,
        "San Francisco",
        "20",
        "john@john.doe"
    ),

我怎样才能像马特·汤普森那样，将其排序为Person对象并使用NSPredicate进行过滤呢

下面是初始化解析器的方法：

//Prepare Roster
    NSString *pathToFile = [[NSBundle mainBundle] pathForResource:@"myFile" ofType: @"csv"];
    NSArray *myFile = [NSArray arrayWithContentsOfCSVFile:pathToFile options:CHCSVParserOptionsSanitizesFields];
    NSLog(@"Loading CSV from: %@", myFile);

下面是Mattt在我链接的文章中所做的，我想用我的代码来做：

NSArray *firstNames = @[ @"Alice", @"Bob", @"Charlie", @"Quentin" ];
NSArray *lastNames = @[ @"Smith", @"Jones", @"Smith", @"Alberts" ];
NSArray *ages = @[ @24, @27, @33, @31 ];

NSMutableArray *people = [NSMutableArray array];
[firstNames enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    Person *person = [[Person alloc] init];
    person.firstName = firstNames[idx];
    person.lastName = lastNames[idx];
    person.age = ages[idx];
    [people addObject:person];
}];

---

首先，定义合适的

人员

类别：

@interface Person : NSObject
@property(copy, nonatomic) NSString *firstName;
@property(copy, nonatomic) NSString *lastName;
// ...
@property(nonatomic) int age;
// ...
@end

然后，通过枚举

myFile

array。在块内部，

行

是单行的“子数组”：

NSMutableArray *people = [NSMutableArray array];
[myFile enumerateObjectsUsingBlock:^(NSArray *row, NSUInteger idx, BOOL *stop) {
    if (row > 0) { // Skip row # 0 (the header)
       Person *person = [[Person alloc] init];
       person.lastName = row[0];
       person.firstName = row[1];
       // ...
       person.age = [row[6] intValue];
       // ...
       [people addObject:person];
   }
}];

现在，您可以过滤该阵列，如教程所示：

NSPredicate *smithPredicate = [NSPredicate predicateWithFormat:@"lastName = %@", @"Smith"];
NSArray *filtered = [people filteredArrayUsingPredicate:smithPredicate];

---

感谢您的解释和简化过程！