What is an IEnumerator in C#?

What is an IEnumerator in C#?

IEnumerable in C# is an interface that defines one method, GetEnumerator which returns an IEnumerator interface. This allows readonly access to a collection then a collection that implements IEnumerable can be used with a for-each statement.

Which method is used to move the cursor to the next element of IEnumerator?

Remarks. After an enumerator is created or after the Reset method is called, an enumerator is positioned before the first element of the collection, and the first call to the MoveNext method moves the enumerator over the first element of the collection.

What is the difference between IEnumerator and IEnumerable in C#?

The difference between IEnumerable and IEnumerator is IEnumerable works for the generic interface, and IEnumerator works for all non-generic interfaces. IEnumerable points to an object which can be enumerated, but IEnumerator is implemented using each statement for iteration. It acts as an object.

What interface must an object implement to be enumerated over by using the foreach statement?

The IEnumerable interface permits enumeration by using a foreach loop.

What is Coroutine in C#?

A coroutine is a function that can suspend its execution (yield) until the given YieldInstruction finishes.

What is IEnumerable and enumerator in C#?

IEnumerable and IEnumerator both are interfaces in C#. IEnumerable is an interface defining a single method GetEnumerator() that returns an IEnumerator interface. IEnumerator has two methods MoveNext and Reset. It also has a property called Current. The following shows the implementation of IEnumerable and IEnumerator.

What is a Coroutine in unity?

In Unity, a coroutine is a method that can pause execution and return control to Unity but then continue where it left off on the following frame. Synchronous operations that run within a coroutine still execute on the main thread.

What is Interface class in C#?

Interface in C# is a blueprint of a class. It is like abstract class because all the methods which are declared inside the interface are abstract methods. It cannot have method body and cannot be instantiated. It is used to achieve multiple inheritance which can’t be achieved by class.

When should I use IEnumerable in C#?

IEnumerable is best to query data from in-memory collections like List, Array etc. IEnumerable doesn’t support add or remove items from the list. Using IEnumerable we can find out the no of elements in the collection after iterating the collection. IEnumerable supports deferred execution.

Does List implement IEnumerable?

List implements the interface Ienumerable.so it Includes all methods of IEnumerable.

How does IEnumerator work?

IEnumerator has one property called Current and two methods, Reset() and MoveNext() (which is useful for knowing the current position of an item in a list). Implementing IEnumerable essentially means that the object can be iterated over.