Objective c NSMutableArray枚举对象

如何通过快速枚举来枚举代码中实例的值，它返回数组的地址，而且我觉得有一种简单的方法可以做到这一点

BNRStockHolding *stockHolding = [[BNRStockHolding alloc] init];
[stockHolding setPurchasedSharePrice:2.30];
[stockHolding setCurrentSharePrice:4.50];
[stockHolding setNumberOfShares:40];
float p = [stockHolding purchasedSharePrice];
float c = [stockHolding currentSharePrice];
int n = [stockHolding numberOfShares];
float cost = [stockHolding costInDollars];
float val = [stockHolding valueInDollars];

BNRStockHolding *stockHolding1 = [[BNRStockHolding alloc] init];
[stockHolding setPurchasedSharePrice:12.19];
[stockHolding setCurrentSharePrice:10.56];
[stockHolding setNumberOfShares:90];
float p1 = [stockHolding purchasedSharePrice];
float c1 = [stockHolding currentSharePrice];
int n1 = [stockHolding numberOfShares];
float cost1 = [stockHolding costInDollars];
float val1 = [stockHolding valueInDollars];

BNRStockHolding *stockHolding2 = [[BNRStockHolding alloc] init];
[stockHolding setPurchasedSharePrice:45.10];
[stockHolding setCurrentSharePrice:49.51];
[stockHolding setNumberOfShares:210];
float p2 = [stockHolding purchasedSharePrice];
float c2 = [stockHolding currentSharePrice];
int n2 = [stockHolding numberOfShares];
float cost2 = [stockHolding costInDollars];
float val2 = [stockHolding valueInDollars];

NSMutableArray *threeInstances = [NSMutableArray arrayWithObjects:
    stockHolding, stockHolding1, stockHolding2, nil];

for(BNRStockHolding *d in threeInstances) {
    NSLog(@"%@", d);
}

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您只想打印对象吗？如果是这样，请尝试在BNRStockHolding类中定义

description

方法。像这样：

- (NSString *)description {
    return [NSString stringWithFormat: @"PurchasedSharePrice=%f, CurrentSharePrice=%f", purchasedSharePrice, currentSharePrice];
}

---

它不会打印地址，而是打印出您在其中定义的NSString。

如果您不想修改您的

BNRStockHolding

类，它将如下所示：

for(BNRStockHolding *d in threeInstances) {
    NSLog(@"Number of shares: %d", [d numberOfShares]);
    NSLog(@"PurchasedSharePrice: %f, CurrentSharePrice: %f", [d 
        purchasedSharePrice], [d currentSharePrice]);
}

---

你到底想做什么？你应该使用NSDecimalNumber来存储货币。我想打印PricesTarget关于快速枚举的值。这是一种方便，而不是一个基本功能。确定要对数据执行的操作，如果快速枚举有效，则使用它。我希望数组中的所有值都能快速枚举所有值在

BNRStockHolding

类中简化此方法，并且不更改任何其他内容。当然，您只需在上面的NSString中添加您想要打印的任何其他值。效果非常好！非常感谢你！我终于可以睡觉了。