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BOOL(YesOrNo)をNSNumberにしたり戻したり

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NSNumberSample

@implementation NSNumberSample

- (NSNumber *)toNumber:(BOOL)YesOrNo{
    return [NSNumber numberWithBool:YesOrNo];
}

- (BOOL)toBool:(NSNumber *)number{
     // numberが0の時だけNO、それ以外はYESを返す
    return [number boolValue];
}

@end

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