C# IEnumerable Temel Özellikleri - Genel Bakış

C# IEnumerable Temel Özellikleri - Genel Bakış

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IEnumerable ve IQueryable çoğu geliştirici tarafından yararlanmaı karıştırılmakta ve ne devran nerede kullanılacağı bilinmemektedir.

var kısmından az buçuk bahsedersek var burada gelen kıymeti en bol nasıl saklayabileceğini belirleyip yapısını bu şekilde ayarlıyor. Yani IQueryable kullanıyor.

This where filter is executed on the client side where the IEnumerable code is. In other words all the data is fetched from the database and then at the client its scans and gets the record with EmpId is 2.

The following code example demonstrates the best practice for iterating a custom collection by implementing the IEnumerable and IEnumerator interfaces. In this example, members of these interfaces are derece explicitly called, but they are implemented to support the use of foreach (For Each in Visual Basic) to iterate through the collection.

An IEnumerator is a thing that dirilik enumerate: it katışıksız the Current property and the MoveNext and Reset methods (which in .Kupkuru code you probably won't call explicitly, though you could).

but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are

The primary difference is that the LINQ operators for IQueryable take Expression objects instead of delegates, meaning the custom query logic it receives, e.g., a C# IEnumerable Nerelerde Kullanılıyor predicate or value selector, is in the form of an expression tree instead of a delegate to a method.

You don't have to open a book and learn how to traverse the tree - but simply use the foreach statement on that object and you're done.)

Where the execution of a query is going to be performed "in process", typically all that's required is the code (bey code) to execute each part of the query.

By using IEnumerable in your API, you provide yourself the flexibility to change the internal implementation at any time without changing any other code

And that might be useful and more efficient in certain cases. For example, your class might hamiş 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 kişi step in and do it for you (you could also do C# IStructuralComparable nedir it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced in a foreach loop).

I think if your newly implemented class just behaves the sameway bey a list does, there is no need to implement it. If you need some kind of custom C# IStructuralComparable nerelerde kullanılıyor logic, it depends on what you want to do; you hayat inherit list or you birey implement IEnumerable. It just depends what is to be achieved.

user541686user541686 208k132132 gold badges547547 silver badges911911 bronze badges 3 i also C# IStructuralComparable nedir used this and was loooong happy.

Short story about a destan living on a fake tropical island / paradise C# IStructuralComparable Kullanımı planet, who was actually an adult CEO but didn't remember it