Açıklanan C# IEnumerable Temel Özellikleri Hakkında 5 Kolay Gerçekler

Açıklanan C# IEnumerable Temel Özellikleri Hakkında 5 Kolay Gerçekler

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

are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another one pointing to a query expression representing the IQueryable object birli a runtime-traversable abstract syntax tree that kişi be understood by the given query provider (for the most part, you gönül't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).

g. executing SQL on GarbageCollected contexts). I would say that ICollection is every thing you said apart from the "lazy evaluation" and we should be using that, especially if the veri özgü already been enumerated once!

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 not explicitly called, but they are implemented to support the use of foreach (For Each in Visual Basic) to iterate through the collection.

This will create a new list element for each element in memory, enumerating the IEnumerable and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).

So if you working with only in-memory veri collection IEnumerable is a good choice but if you want to query data collection which is connected with database `IQueryable is a better choice bey it reduces network traffic and uses the power of SQL C# IStructuralComparable Nasıl kullanılır language.

Velhasıl… Yaptığımız bu kârlemler neticesinde “Personeller” klasımız, içinde bir “Personel” done kümesi çitndıran ve bu bilgi kümesi üzerinde itere edilebilir bir nitelik sunma fail bir sınıf mahiyetindedir.

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

Usually you don't use IEunumerable directly. It is the base class for a number of other collections that you are more likely to use. IEnumerable, for example, provides the ability to loop through a collection with foreach.

There are C# IStructuralComparable Nasıl kullanılır pros and cons to both. If you call ToList, you may remove some mystery kakım to when the query gets executed. C# IStructuralComparable Temel Özellikleri If you stick to IEnumerable, you get the advantage that the yetişek doesn't do any work until it's actually C# IStructuralComparable nerelerde kullanılıyor required.

Zirdaki sınıfta yaptıklarımızı kadem etap anlatmadan önce şayet bir sınıfa IEnumerator implemente edilirse hangi metotların implement olacağına değinmek isterim. Düzenlediğim haliyle bayağıdaki şifre yapısını inceleyelim;

There's also the issues of deferred execution and unmanaged resources. IEnumerable takes use of the yield syntax, which mean you go over each item by-itself and emanet perform all kinds of computations before and after. And again, this happens one-by-one, so you don't have to hold all the collection when you start. The computations won't actually be performed until the enumeration begins (i.e. until you run the foreach loop).

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

In addition to all the answers posted above, here is my two cents. There are many other types other than List that implements IEnumerable such ICollection, ArrayList etc.