NSD字典计数 [英] NSDictionary Count

问题描述

如何计算账单"里面有多少个项目?

how can I count how many itens do I have inside of "bills"?

bills =     (
            {
        id = 1;
        name = "Cursus Nibh Venenatis";
        value = "875.24";
    },
            {
        id = 2;
        name = "Elit Fusce";
        value = "254.02";
    }
);

我是这样数的:

NSUInteger keyCount = [resultsDictionary count];
NSLog(@"%i", keyCount);

谢谢！

推荐答案

一个简单的解决方案是假设 OP 想要计算 bills，它恰好是一个数组，所以解决方案是>

A naive solution would assume the OP wants to count bills, which happens to be an array, so the solution would be

NSLog(@"Count: %i", [[resultsDictionary objectForKey: @"bills"] count]);

但是，如果您的字典中包含多个要计算的对象，那么将它们全部列举出来是唯一的方法.

However, if you have a dictionary with more than one object you want to count, then enumerating them all is the only way to go.

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