En iyi Tarafı C# IEnumerable Nedir

En iyi Tarafı C# IEnumerable Nedir

Blog Article

Botz3000Botz3000 39.4k88 gold badges106106 silver badges128128 bronze badges 1 I believe this is was not asked here so it sevimli be a comment hamiş an answer, but anyway makes sense from refactoring standpoint

If you niyet to build a public API, it's better to use IEnumerable than List, because you better use the most minimalistic interface/class. List lets you access objects by index if that's required.

The second example returns an IEnumerable that contains all the information needed to run the query later on.

e., using IEnumerable instead of List where possible) provides exactly that decoupling while also requiring proper design philosophy. That is to say, you gönül achieve decoupling but not achieve minimal dependency, but you cannot achieve minimal dependency without achieving maximal decoupling.

The expression can simply be a constant expression of the object itself or a more complex tree of a composed set of query operators and operands. The query provider's IQueryProvider.Execute() or IQueryProvider.CreateQuery() methods are called with an Expression

The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn has a Current property and a MoveNext method that returns a bool. I kişi highly recommend Eric Lipperts blog post about pattern matching

IQueryable allows for out-of memory things like a remote data source, such as a C# IEnumerable Temel Özellikleri database or web service.

It özgü a good performance when you C# IEnumerable Kullanımı are iterating through big objects or collections because it does hamiş load the entire object to memory in order to make iteration.

Where the execution will be performed out-of-process, the logic of the query özgü to be represented in veri such that the LINQ provider yaşama convert it into the appropriate form for the out-of-memory execution - whether that's an LDAP query, SQL or whatever.

List, on the other hand, is a specific implementation of IEnumerable that stores the objects in a specific, known manner. Internally, this may be a very good way to store your values that you expose via IEnumerable, but a List is derece always appropriate.

And that might be useful and more efficient in certain cases. For example, your class might not hold any collection in memory, but rather iterate over all files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable yaşama step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of C# IEnumerable Nerelerde Kullanılıyor being able to use the object produced in a foreach loop).

Oluşturduğumuz constructor içerisinde params ile Calisan tipinde parametre girebileceğimi ve sayısının da vuzuhsuz olduğunu belirttik. Constructor içerisinde de gelen parametreyi property üzerine atadık.

On the flip side, it is usually best to declare a method’s return type by using the strongest type possible (trying derece to commit yourself to a specific type). Share Follow

If you are C# IEnumerable Kullanımı writing a class, and your class implements the IEnumerable interface (generic (T) or not) you're allowing any consumer of your class to iterate over its collection without knowing C# IEnumerable Kullanımı how it's structured.