Objective-C 异常处理

#import <UIKit/UIKit.h>
#import "AppDelegate.h"

int main(int argc, char * argv[]) {

    @try {
        // 抛出一个自定义异常
        @throw [NSException exceptionWithName:@"My Error" reason:nil userInfo:nil];
    }
    @catch (NSException *exception) {
        // 处理异常
        NSLog(@"%@",exception);
    }
    @finally {
        // 运行
        NSLog(@"run");
    }
    
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}