2 Dakika Kural için C# IEnumerable Temel Özellikleri

2 Dakika Kural için C# IEnumerable Temel Özellikleri

Blog Article

Done sıkıntısızışı ve LINQ sorguları: IEnumerable, Language Integrated Query (LINQ) sorgularında geniş olarak kullanılır. LINQ, veri koleksiyonları üzerinde sorgulama ve filtreleme üzere işlemlemleri kolaylaştırır ve başarımı artırır.

Anything in .Kupkuru that you can iterate over implements IEnumerable. If you're building your own class, and it doesn't already inherit from a class that implements IEnumerable, you güç make your class usable in foreach statements by implementing IEnumerable (and by creating an enumerator class that its new GetEnumerator method will return).

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!

But now see the below code we have changed IEnumerable to IQueryable. It creates a SQL Query at the server side and only necessary data is sent to the client side.

Said in a very simple way, that any object implementing this interface will provide a way to get an enumerator. An enumerator is used with the foreach birli one example.

Basically it has a method to get the next item in the collection. It doesn't need the whole collection to be in memory and doesn't know how many items are in it, foreach just keeps getting the next item until it runs out.

So if I am going through all the items on ebay, one at a time would be something even a small computer yaşama handle, but ".ToList()" would surely run me out of memory, no matter how big my computer was. No computer hayat by itself contain and C# IStructuralComparable nedir handle such a huge amount of data.

Coming soon: Throughout 2024 we will be phasing out GitHub Issues bey the feedback mechanism for content and replacing it with a new feedback system. For more information see: .

IEnumerable describes behavior, while C# IStructuralComparable nedir List is an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the results right away.

There are many cases (such birli an infinite list or a very large list) where IEnumerable cannot be transformed to a List. The most obvious examples are all the prime numbers, all the users of feysbuk with their details, or all the items on ebay. The difference is that "List" objects are stored "right here and right now", whereas "IEnumerable" objects work "just one at a time".

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 C# IStructuralComparable Kullanımı DB, or other unmanaged resources. IEnumerable birey 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 being able to use the object produced in a foreach loop).

Important Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, C# IStructuralComparable nedir express or implied, with respect to the information provided here.

If you create an IEnumerable, then all rows will be pulled into memory kakım objects before running the query.

Projeyi yayınladıgınız devir user C# IStructuralComparable nerelerde kullanılıyor secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.