将 NSArray 转换为 NSDictionary

我怎样才能转换NSArray to an NSDictionary，使用数组对象的 int 字段作为键NSDictionary?

试试这个魔法：

NSDictionary *dict = [NSDictionary dictionaryWithObjects:records 
                                   forKeys:[records valueForKey:@"intField"]];

仅供参考，这是可能的，因为这个内置功能：

@interface NSArray(NSKeyValueCoding)

/* Return an array containing the results of invoking -valueForKey: 
on each of the receiver's elements. The returned array will contain
NSNull elements for each instance of -valueForKey: returning nil.
*/
- (id)valueForKey:(NSString *)key;