Should I use list or IList?
List is used whenever you just want a generic List where you specify object type in it and that’s it. IList on the other hand is an Interface.
Which is better IEnumerable or list?
In terms of performance, the answer is it depends. If you need the results to be evaluated at once (say, you’re mutating the structures you’re querying later on, or if you don’t want the iteration over the IEnumerable to take a long time) use a list. Else use an IEnumerable .
Is list faster than IEnumerable?
We aren’t forcing the caller to convert their data structure to a List unnecessarily. So it isn’t that IEnumerable is more efficient than list in a “performance” or “runtime” aspect. It’s that IEnumerable is a more efficient design construct because it’s a more specific indication of what your design requires.
What is the difference between ICollection and IEnumerable?
An IEnumerable is a list or a container which can hold some items. You can iterate through each element in the IEnumerable. ICollection is another type of collection, which derives from IEnumerable and extends it’s functionality to add, remove, update element in the list.
What is the difference between ICollection and IList in C#?
The main difference between the IList and ICollection interfaces is that IList allows you to access elements via an index. IList describes array-like types. Elements in an ICollection can only be accessed through enumeration. Both allow the insertion and deletion of elements.
What is difference between List and IList?
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. List and IList are used to denote a set of objects.
Is IQueryable faster than List?
GetList(context) might return an object backed by a custom LINQ provider (like an Entity Framework collection), then you probably want to leave the data cast as an IQueryable: even though your benchmark shows it being 20 times faster to use a list, that difference is so small that no user is ever going to be able to …
What is the difference between IList and List C#?
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.
Is List a collection C#?
List is a collection class in C# and . NET.
Why would Entity Framework use icollection instead of IEnumerable?
Entity Framework would use ICollection because it needs to support Add operations, which are not part of the IEnumerable interface. Also note that you were using ICollection , you were merely exposing it as the List implementation. List brings along with it IList , ICollection , and IEnumerable .
What is the difference between icollection and IList in Java?
ICollection is an interface that exposes collection semantics such as Add(), Remove(), and Count. Collection is a concrete implementation of the ICollection interface. IList is essentially an ICollection with random order-based access.
What is the use of icollection in Java?
ICollection extends IEnumerable. It supports non-index based operations like – Add item in Collection, remove, check contained item etc. ICollection has “Add” method (see in screenshot 2). So, there is not any index as a parameter to insert or remove element at a particular index.
Should list be exposed via the interface or the class?
List brings along with it IList , ICollection , and IEnumerable . As for your change, exposing via the interface is a good choice, despite List working. The interface defines the contract but not the implementation. The implementation couldchange.