我想调用一个返回两个值的方法
I want to call a method which returns two values
基本上可以说我的方法如下所示(想返回2个值)
basically lets say my method is like the below (want to return 2 values)
NSString* myfunc { NSString *myString = @"MYDATA"; NSString *myString2 = @"MYDATA2"; return myString; return myString2; }所以当我叫它时，我会用吗?
So when i call it, i would use??
NSString* Value1 = [self myfunc:mystring]; NSString* Value2 = [self myfunc:mystring2];我想我做错了什么，有人可以帮我吗? 谢谢
I guess im doing something wrong with it, can anyone help me out? Thanks
推荐答案您有一些选择:
- NSArray :仅返回一个数组.很简单.
- 指针:传入两个指针，然后写入它们，而不返回任何内容.确保检查NULL！
- 结构:创建一个具有两个字段的结构，每个要返回的内容都一个，然后返回该结构中的一个.
- 对象:相同的结构，但创建完整的NSObject子类.
- NSDictionary :类似于NSArray，但不再需要使用值的魔术排序.
- NSArray: Just return an array. Pretty simple.
- Pointers: Pass in two pointers, and write to them instead of returning anything. Make sure to check for NULL!
- Structure: Create a struct that has two fields, one for each thing you want to return, and return one of that struct.
- Object: Same a structure, but create a full NSObject subclass.
- NSDictionary: Similar to NSArray, but removes the need to use magic ordering of the values.