ios - 循环遍历嵌套的 NSMutableDictionary 并过滤一些项目

Question

我已经被困在这里一段时间了，尝试了很多事情都没有成功。所以我有一个看起来像这样的嵌套字典:

{"Div 3 Mellersta G\u00f6taland, herrar": {
    "0": {"awayScore": "0", "homeTeam": "Hestrafors IF", "tempTime": "12:00", "homeScore": "0", "awayTeam": "Gunnilse IS", "time": "90'", "events": []}, 
    "1": {"awayScore": "0", "homeTeam": "Lerums IS", "tempTime": "13:00", "homeScore": "0", "awayTeam": "Skara FC", "time": "44'", "events": []}, 
    "2": {"awayScore": "0", "homeTeam": "Vara SK ", "tempTime": "14:00", "homeScore": "0", "awayTeam": "IFK Falk\u00f6ping FF", "time": "14:00", "events": []}, 
    "3": {"awayScore": "0", "homeTeam": "Holmalunds IF Alings\u00e5s", "tempTime": "15:00", "homeScore": "0", "awayTeam": "Lunden \u00d6ver\u00e5s BK", "time": "15:00", "events": []}, 
    "4": {"awayScore": "0", "homeTeam": "IFK Tidaholm", "tempTime": "16:00", "homeScore": "0", "awayTeam": "S\u00e4vedalens IF", "time": "16:00", "events": []}}, 
"Div 4 A Herrar": {
    "0": {"awayScore": "0", "homeTeam": "SKIF Semberija", "tempTime": "17:00", "homeScore": "0", "awayTeam": "Floda BoIF", "time": "17:00", "events": []}, 
    "1": {"awayScore": "0", "homeTeam": "Partille IF FK", "tempTime": "18:00", "homeScore": "0", "awayTeam": "Kode IF", "time": "18:00", "events": []}, 
    "2": {"awayScore": "0", "homeTeam": "IK Kongah\u00e4lla", "tempTime": "19:00", "homeScore": "0", "awayTeam": "Romelanda UF", "time": "19:00", "events": []}}}

我需要做的是遍历此处的所有项目以访问键/值对 time，如果时间值的值介于 0 - 90 之间，我想保存它。

这里重要的是结构没有改变。我的意思是说，例如我们对所有项目进行了迭代并检查了时间值，那么新字典看起来像:

{"Div 3 Mellersta G\u00f6taland, herrar": {
    "0": {"awayScore": "0", "homeTeam": "Hestrafors IF", "tempTime": "12:00", "homeScore": "0", "awayTeam": "Gunnilse IS", "time": "90'", "events": []}, 
    "1": {"awayScore": "0", "homeTeam": "Lerums IS", "tempTime": "13:00", "homeScore": "0", "awayTeam": "Skara FC", "time": "44'", "events": []}, 
}}

所有其他项目都被过滤掉，因为 Div 3 Mellersta 中的前两个项目是唯一时间值为 0 - 90 的项目。

注意应该用Objective-C写

谢谢大家!

Answer 1

试试这段代码

NSMutableDictionary *newDict = [NSMutableDictionary dictionary];
[rootDict enumerateKeysAndObjectsUsingBlock:^(NSString *key1, NSDictionary *dict1, BOOL *stop) {
    [dict1 enumerateKeysAndObjectsUsingBlock:^(NSString *key2, NSDictionary *dict2, BOOL *stop) {
        NSString *time = dict2[@"time"];
        if([time integerValue] >= 0 && [time integerValue] <= 90 && ![time containsString:@":"]) {
            if(!newDict[key1]) {
                newDict[key1] = [NSMutableDictionary dictionary];
            }
            newDict[key1][key2] = dict2;
        }
    }];
}];