我收到错误incompatible integer to pointer conversion returning unsigned int from a function with result type NSUInteger *
我不确定那是什么意思，因为它们是一样的，不是..？对不起，我完全是一个新手，这是我的扑克牌甲板类的代码：
扑克牌.h
#import "Card.h"
@interface PlayingCards : Card
@property (strong, nonatomic) NSString *suit;
@property (nonatomic) NSUInteger rank;
+(NSArray *) validSuit;
+(NSUInteger *) maxRank;
@end
扑克牌.m
#import "PlayingCards.h"
@implementation PlayingCards
@synthesize suit = _suit;
//modifying the contents getter so it will return array with the ranks and rank+suit
-(NSString *) contents {
NSArray *cardsRank = [PlayingCards rankStrings];
return [cardsRank[self.rank] stringByAppendingString:self.suit];
}
//creating a method to make sure we get validated suits
+(NSArray *) validSuit {
return @[@"♠",@"♣",@"♥",@"♦"];
}
//creating calss method to validate the rank
+(NSArray *) rankStrings {
return @[@"?",@"A",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",@"J",@"Q",@"K"];
}
//creating a new setter for suit to make sure we get the valitated suits, uding the validateSuit method
-(void) setSuit:(NSString *)suit {
if ([[PlayingCards validSuit] containsObject:suit]) {
_suit = suit;
}
}
//creating new getter for suit to make sure its not empty
-(NSString *) suit {
return _suit? _suit: @"?";
}
//creating a class method to make sure when user set the rank he will will
+(NSUInteger *) maxRank {
return [self rankStrings].count - 1;
}
//creating a new setter to the renk to make sure the rank is validates
-(void) setRank:(NSUInteger)rank {
if (rank <= [PlayingCards maxRank]) {
_rank = rank;
}
}
@end
请帮我解决这个问题，它在行中（在 .m 文件中）：
+(NSUInteger *) maxRank {
return [self rankStrings].count - 1;
}
并影响在线：
-(void) setRank:(NSUInteger)rank {
if (rank <= [PlayingCards maxRank]) {
_rank = rank;
}
}
有另一个错误
order comparison between pointer and integer
谢谢！