NSNumber

NSNumber
//用来封装 基本数据类型 int float double char ….
以前@“5” @“6” @“7” 把基础数据类型都转化成NSNumber

• (NSNumber *)numberWithChar:(char)value;
• (NSNumber *)numberWithUnsignedChar:(unsigned char)value;
• (NSNumber *)numberWithShort:(short)value;
• (NSNumber *)numberWithUnsignedShort:(unsigned short)value;
• (NSNumber *)numberWithInt:(int)value;
• (NSNumber *)numberWithUnsignedInt:(unsigned int)value;
• (NSNumber *)numberWithLong:(long)value;
• (NSNumber *)numberWithUnsignedLong:(unsigned long)value;
• (NSNumber *)numberWithLongLong:(long long)value;
• (NSNumber *)numberWithUnsignedLongLong:(unsigned long long)value;
• (NSNumber *)numberWithFloat:(float)value;
• (NSNumber *)numberWithDouble:(double)value;
• (NSNumber *)numberWithBool:(BOOL)value;
• (NSNumber *)numberWithInteger:(NSInteger)value NS_AVAILABLE(10_5, 2_0);
• (NSNumber *)numberWithUnsignedInteger:(NSUInteger)value NS_AVAILABLE(10_5, 2_0);
  //取方法 使用get方法就可以
  @property (readonly) char charValue;
  @property (readonly) unsigned char unsignedCharValue;
  @property (readonly) short shortValue;
  @property (readonly) unsigned short unsignedShortValue;
  @property (readonly) int intValue;
  @property (readonly) unsigned int unsignedIntValue;
  @property (readonly) long longValue;
  @property (readonly) unsigned long unsignedLongValue;
  @property (readonly) long long longLongValue;
  @property (readonly) unsigned long long unsignedLongLongValue;
  @property (readonly) float floatValue;
  @property (readonly) double doubleValue;
  @property (readonly) BOOL boolValue;
  @property (readonly) NSInteger integerValue NS_AVAILABLE(10_5, 2_0);
  @property (readonly) NSUInteger unsignedIntegerValue NS_AVAILABLE(10_5, 2_0);