Objective-C中的指定初始值设定项

Question

只是要确认一下,在Objective-C中创建指定初始值设定项的正确方法是什么？

这是启动ivars的正确方法吗？

你能建议我改进一下吗？

Person.h

@interface Person : NSObject 


@property (nonatomic, retain) NSString *name;
@property (nonatomic, assign) int age;
@property (nonatomic, assign) NSString *sex;
@property (nonatomic, assign) int weight;

-(id)initWithName:(NSString *)name;
-(id)initWithName:(NSString *)name age:(int)age;
-(id)initWithName:(NSString *)name age:(int)age sex:(NSString *)s;
-(id)initWithName:(NSString *)name age:(int)age sex:(NSString *)s andWeight:(float)w;


@end

Person.m

@implementation Person

@synthesize name = _name;
@synthesize sex = _sex;
@synthesize age = _age;
@synthesize weight = _weight;

-(id)initWithName:(NSString *)name age:(int)age sex:(NSString *)s andWeight:(float)w
{
    if(self = [super init])
    {
        [self setName:name];
        [self setAge:age];
        [self setSex:s];
        [self setWeight:w];
    }
    return self;
}

-(id)initWithName:(NSString *)name age:(int)age sex:(NSString *)s
{
    return [self initWithName:name age:age sex:s andWeight:0];
}

-(id)initWithName:(NSString *)name age:(int)age
{
    return [self initWithName:name age:age sex:0];
}

-(id)initWithName:(NSString *)name
{
    return [self initWithName:name age:0];
}

-(id)init
{
    return [self initWithName:nil];
}

提前致谢 !

Answer 1

在我看来这是正确的.您可以通过从任何其他方法调用主init方法来提高效率,因此您不会链接调用,但我认为没有太大的区别.