What is a custom allocator?

The custom allocator will serve individual allocation requests by simply returning a pointer to memory from the pool. Actual deallocation of memory can be deferred until the lifetime of the memory pool ends. An example of memory pool-based allocators can be found in the Boost C++ Libraries.

What is the use of allocator?

Allocators are objects responsible for encapsulating memory management. std::allocator is used when you want to separate allocation and do construction in two steps. It is also used when separate destruction and deallocation is done in two steps.

What is the meaning of allocator?

Definitions of allocator. a person with authority to allot or deal out or apportion. synonyms: distributor. type of: authority. (usually plural) persons who exercise (administrative) control over others.

Where are allocator implemented?

C++ standard library
Where are allocators implemented? Explanation: Allocators are implemented in C++ standard library but it is used for C++ template library. 3.

What is an allocator in law?

The taxing master is an official of the court whose primary job is to hear and make orders on bill of costs. The taxing master signs and stamps a certificate known as an “allocator”, which can be used to enforce the payment of legal costs by the losing party.

Which operator is used to allocate the memory?

Correct Option: B. Operator new dynamically allocates memory for an object and returns a reference to it. This reference is address in memory of the object allocated by new.

Why constructors are efficient instead of a function?

2. Why constructors are efficient instead of a function init() defined by the user to initialize the data members of an object? Explanation: Copy constructor allows the user to initialize an object with the values of another object instead of supplying the same set of values again to initialize the object.

What do you know about allocation?

An allocation is an amount of something, especially money, that is given to a particular person or used for a particular purpose. The allocation of something is the decision that it should be given to a particular person or used for a particular purpose.