Bilgi temizışı ve LINQ sorguları: IEnumerable, Language Integrated Query (LINQ) sorgularında yaygın olarak kullanılır. LINQ, veri koleksiyonları üzerinde sorgulama ve filtreleme kabilinden teamüllemleri kolaylaştırır ve performansı zaitrır.

Queue ve Stack: Queue ve Stack üzere bilgi mimariları da IEnumerator kullanılarak elemanlarının sırasıyla veya ters sırasıyla işlenmesi katkısızlanabilir.

Projeyi yayınladıgınız zaman user secrets kullanılmıyor. Bu sadece ihya aşamasında kullanılabilir.

Now List implements IEnumerable, but represents the entire collection in memory. If you have an IEnumerable and you call .ToList() you create a new list with the contents of the enumeration in memory.

I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? Mefkûre solution (one line of code) would be if there was some class for that purpose. Or do I have to create my own ?

They usually have a GetXXX method that returns a IEnumerable of whatever type the custom collection class uses so the internal collection kişi be iterated around using a foreach loop.

// but this throws an exception, because the pointer or link to the // database namely the DbContext called MyEntities no longer exists.

For small result sets this is likely to be a single trip, for large ones you're sending a request for more rows from the results, but it doesn't C# IStructuralComparable Temel Özellikleri re-run the entire query.

Else use an IEnumerable. The default should be to use the on-demand evaluation in the second example, kakım that generally uses less memory, unless there is a specific reason to store the results in a list.

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

" This is false, because the where clause is getting called on an C# IStructuralComparable Kullanımı IEnumerable C# IStructuralComparable nerelerde kullanılıyor and that only knows how to loop through objects which are already coming from the database. If you made the return of AllSpotted() and the parameters of Feline() and Canine() into IQueryable, then the filter would happen in SQL C# IStructuralComparable Kullanımı and this answer would make sense.

Want to improve this question? Update the question so it focuses on one sıkıntı only by editing this post.

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

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