iOS 多種數據類型存入NSMutableArray數組
NSMutableArray *array = [[NSMutableArray alloc] init];
BOOL isRight = NO;
int ABC = 10;
long longABC = 10;
double doubleABC = 10.123;
char cr = 'a';
[array addObject:[NSNumber numberWithBool:isRight]];
[array addObject:[NSNumber numberWithInt:ABC]];
[array addObject:[NSNumber numberWithDouble:doubleABC]];
[array addObject:[NSNumber numberWithLong:longABC]];
[array addObject:[NSNumber numberWithChar:cr]];
// 將基本類型數據封裝到NSNumber中後,就可以通過下面的實例方法重新獲取它
- (char) charValue;
- (int) intValue;
- (float) floatValue;
- (BOOL) boolValue;
- (NSString *) stringValue;
NSNumber *num = [NSNumber numberWithInt:88];
NSInteger integer = [num intValue];