Iphone 如何优化有关NSArray的代码？

我觉得我在这里做了很多不必要的事情：

- (id)init {
    if ((self = [super init])) {            
        NSMutableArray *anArray = [[NSMutableArray alloc] init];
        self.currentScopeArray = anArray;
        [anArray release];

        NSString *aPath = [[NSBundle mainBundle] pathForResource:@"Configuration" ofType:@"plist"];
        NSMutableDictionary *aDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:aPath];
        NSMutableArray *anotherArray = [[NSMutableArray arrayWithObject:[aDictionary objectForKey:@"Search"]] objectAtIndex:0];
        self.defaultScopeArray = anotherArray;
        [aDictionary release];

        for (int x = 0; x < [self.defaultScopeArray count]; x++) {
            BOOL enableCheckmark = [[[self.defaultScopeArray objectAtIndex:x] objectForKey:@"enabledByDefault"] boolValue];
            if (enableCheckmark) {
                if (![self.currentScopeArray containsObject:[self.defaultScopeArray objectAtIndex:x]]) {
                    [self.currentScopeArray addObject:[self.defaultScopeArray objectAtIndex:x]];
                }
            }
        }
    }
    return self;
}

-（id）init{
if（（self=[super init]）{
NSMutableArray*anArray=[[NSMutableArray alloc]init]；
self.currentScopeArray=anArray；
[阵列释放]；
NSString*aPath=[[NSBundle mainBundle]pathForResource:@“配置”类型：@“plist”]；
NSMutableDictionary*aDictionary=[[NSMutableDictionary alloc]initWithContentsOfFile:aPath]；
NSMutableArray*anotherArray=[[NSMutableArray arrayWithObject:[aDictionary objectForKey:@“Search”]]objectAtIndex:0]；
self.defaultScopeArray=另一个数组；
[词典发布]；
对于（int x=0；x<[self.defaultScopeArray count]；x++）{
BOOL enableCheckmark=[[self.defaultScopeArray objectAtIndex:x]objectForKey:@“enabledByDefault”]boolValue]；
如果（启用复选标记）{
如果（！[self.currentScopeArray containsObject:[self.defaultScopeArray objectAtIndex:x]]）{
[self.currentScopeArray addObject:[self.defaultScopeArray objectAtIndex:x]]；
}
}
}
}
回归自我；
}

至少，您可以替换此块：

NSMutableArray *anArray = [[NSMutableArray alloc] init];
self.currentScopeArray = anArray;
[anArray release];

NSString *aPath = [[NSBundle mainBundle] pathForResource:@"Configuration" ofType:@"plist"];
NSMutableDictionary *aDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:aPath];
NSMutableArray *anotherArray = [[NSMutableArray arrayWithObject:[aDictionary objectForKey:@"Search"]] objectAtIndex:0];
self.defaultScopeArray = anotherArray;
[aDictionary release];

与：

该区块：

NSMutableArray *anArray = [[NSMutableArray alloc] init];
self.currentScopeArray = anArray;
[anArray release];

NSString *aPath = [[NSBundle mainBundle] pathForResource:@"Configuration" ofType:@"plist"];
NSMutableDictionary *aDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:aPath];
NSMutableArray *anotherArray = [[NSMutableArray arrayWithObject:[aDictionary objectForKey:@"Search"]] objectAtIndex:0];
self.defaultScopeArray = anotherArray;
[aDictionary release];

可以是：

NSString *aPath = [[NSBundle mainBundle] pathForResource:@"Configuration" ofType:@"plist"];
NSMutableDictionary *aDictionary = [NSMutableDictionary dictionaryWithContentsOfFile:aPath];
self.defaultScopeArray = [NSMutableArray arrayWithObject:[aDictionary objectForKey:@"Search"]] objectAtIndex:0];

---

通读代码并理解它的功能是一回事，但是如果您解释您试图实现的功能，您的代码可能会得到进一步优化。我也可以只做

self.defaultScopeArray=[[NSMutableArray arrayWithObject:[aDictionary objectForKey:@“Search”]]objectAtIndex:0]如果要提高性能，应该使用alloc/init和release，因为使用[NSMutableArray]之类的方法会创建自动释放的对象，这些对象在一段时间内不会释放，因此会占用内存，如果您使用alloc/init和release，它将立即被释放。我非常确信，在释放释放对象方面，实现将做任何它想做的事情。我考虑的是开发人员的生产力，在这种情况下，这肯定会超过按照您的建议进行操作可能会获得的微小收益。