Should I use collection or list C#?
The reason “why” you “should” use a Collection instead of a List is because if you expose a List , then anyone who gets access to your object can modify the items in the list. Whereas Collection is supposed to indicate that you are making your own “Add”, “Remove”, etc methods.
What is the difference between a list and a collection?
Collections are only iterable sequentially (and in no particular order) whereas a List allows access to an element at a certain position via the get(int index) method. Collection is the main interface of Java Collections hierarchy and List(Sequence) is one of the sub interfaces that defines an ordered collection.
Is a list a collection C#?
List is a collection class in C# and . NET.
Should I use IList or list?
The main difference between List and IList in C# is that List is a class that represents a list of objects which can be accessed by index while IList is an interface that represents a collection of objects which can be accessed by index. Overall, List is a concrete type that implements the IList interface.
Why do we need collections in C#?
C# collection types are designed to store, manage and manipulate similar data more efficiently. Data manipulation includes adding, removing, finding, and inserting data in the collection. Collection types implement the following common functionality: Adding and inserting items to a collection.
Which collection is fastest in C#?
HashSet Use a HashSet when you need super fast lookups against a unique list of items.
Which is better List or Set?
If the requirement is to have only unique values then Set is your best bet as any implementation of Set maintains unique values only. If there is a need to maintain the insertion order irrespective of the duplicity then List is a best option.
Is List part of collection?
A List is an ordered Collection (sometimes called a sequence). Lists may contain duplicate elements. In addition to the operations inherited from Collection , the List interface includes operations for the following: Positional access — manipulates elements based on their numerical position in the list.
What is the difference between List and IList C#?