Is there a name for reference as class member?

Is there a name for reference as class member?

There is no name for this usage, it is simply known as “Reference as class member”. I am assuming it is to prevent the possibly large overhead of copying a big complex object? Yes and also scenarios where you want to associate the lifetime of one object with another object.

What’s the difference between an object and a reference?

In short, object is an instance of a class and reference (variable) points out to the object created in the heap area. Maruthi krishna Published on 05-Jul-2019 11:52:48

Where do reference variables hold values in Java?

Reference variables hold the objects/values of reference types in Java The objects are created in the heap area and, the reference obj just points out to the object of the Student class in the heap, i.e. it just holds the memory address of the object (in the heap).

Why are member variables used as class members?

The shared object’s class may be designed to support multithreading/concurrency as the case may apply. Member references are usually considered bad. They make life hard compared to member pointers. But it’s not particularly unsual, nor is it some special named idiom or thing.

When to use reference variables as class members?

There are a few important points to note when using references as class members: You need to ensure that the referred object is guaranteed to exist till your class object exists. You need to initialize the member in the constructor member initializer list.

Which is the type of the list object?

Type of the elements. Aliased as member type list::value_type. Type of the allocator object used to define the storage allocation model. By default, the allocator class template is used, which defines the simplest memory allocation model and is value-independent.

How are constructors and member initializer lists related?

Constructor is a special non-static member function of a class that is used to initialize objects of its class type. In the definition of a constructor of a class, member initializer list specifies the initializers for direct and virtual bases and non-static data members. (Not to be confused with std::initializer_list.)

Can a reference be bound to a member initializer list?

Reference members cannot be bound to temporaries in a member initializer list: Note: same applies to default member initializer .