Technology Questions

ARC is a compiler-level feature that simplifies the process of managing the lifetimes of Objective-C objects. Instead of you having to remember when to retain or release an object, ARC evaluates the lifetime requirements of your objects and automatically inserts the appropriate method calls at compile time.

Access specifiers in C++ determines the scope of the class members.

Public: If a class member is public, it can be used anywhere without the access restrictions.

Private: if a class member is private, it can be used only by the members and friends of class.

Protected: If a class member is protected, it can be used only by the members and friends of class and the members and friends of classes derived from class.

All the above given statements are functions of Inventory.

Inventory or stock is the goods and materials that a business holds for the ultimate goal of resale. Inventory management is a discipline primarily about specifying the shape and placement of stocked goods.

The primary function of inventory is to use marketing and production to increase profitability, to get the maximum amount for the business' investment. There are other functions of inventory, such as balancing supply and demand, improving efficiency, establishing a safety stock and geographical specialization.

In C++, void represents the absence of type, so void pointers are pointers that point to a value that has no type. The void pointers can point to any data type.

You can declare void pointer as follows:

void *p;

Direct method,

 Subtraction method,

 Modulo-Division method,

 Digit-Extraction method,

 Mid-Square method,

 Folding method,

Pseudo-random method

There are 5 items presented in the associate container. They are set, multiset, map, multimap and bitset.

REORG reorganizes data on physical storage to reclutser rows, positioning overflowed rows in their proper sequence, to reclaim space, to restore free space. It is used after heavy updates, inserts and delete activity and after segments of a segmented tablespace have become fragmented.