unrecognized selector sent to class 0x109d887b8'

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i am getting below mentioned error on my Code in IOS Xcode

"unrecognized selector sent to class 0x109d887b8'"

the error where it is coming is showing as below mentioned Class Method

I am unable to locate this error. In Controller i linked button with event + (NSArray *) validsuits { return @[@"♥",@"♦",@"♠",@"♣"]; }

+[PlayingCard validSuits]: unrecognized selector sent to class 0x109d887b8

Piece of Code is


#import "PlayingCard.h"


@implementation PlayingCard
@synthesize suit = _suit;

- (NSString *) contents
{

    NSArray *rankStrings = [PlayingCard rankStrings];
    return [rankStrings[self.rank] stringByAppendingString:self.suit];
}

+ (NSArray *) validsuits
{
    return @[@"♥",@"♦",@"♠",@"♣"];
}

+ (NSArray *)rankStrings
{
    return @[@"?",@"A",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",@"J",@"Q",@"K"];
}

- (NSString *)suit
{
    return _suit ? _suit : @"?";
}

- (void) setSuit:(NSString *)suit
{
    if ([[PlayingCard validsuits] containsObject: suit])
    {
        _suit = suit;
    }
}

+(NSUInteger) maxRank
{
    return [[PlayingCard rankStrings] count ] -1 ;

}

- (void)setRank:(NSUInteger)rank
{
    if (rank <= [PlayingCard maxRank]) {
        _rank = rank;
    } }



@end

asked 31 secs ago

rahul gulati

4

unrecognized selector sent to class 0x109d887b8'