Detaylar, Kurgu ve C# IEnumerable Nerelerde Kullanılıyor

Detaylar, Kurgu ve C# IEnumerable Nerelerde Kullanılıyor

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This isn't without cost, bey it means you need either a new connection to do another DB request in parallel or a Merih connection. Too much for a comment really

Bu dü arayüzün tasarruf senaryoları farklıdır ve birbirlerinin yerine kullanılmamalıdır. Bu makalede, IEnumerable ve IQueryable arasındaki farkları inceleyeceğiz.

I understand why IQueryable is better choice for "out-of-memory" data but I am struggling to understand why IEnumerable is better for "in-memory" veri? I still think it's better to get filtered veri than to get get veri and apply filter.

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.

(bey per Mike P's excellent answer) wrap an enumerator to pretend to be enumerable, there are some things that you can't really do - for example, it is hoped

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

So the difference between IQueryable and IEnumerable is about where the filter logic is executed. C# IEnumerable Nasıl Kullanılır One executes on the client side and the other executes on the database.

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

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 güç convert it into the appropriate form for the out-of-memory execution - whether that's an LDAP query, SQL or whatever.

I do have one question though. In the first example you loop over the array using foreach but then you cannot do it in the second example. Is this because the array is in a class or because it contains objects?

Bu alanda veya değişik bir alanda, benim ve başka yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm şeşna girmeniz fehvaına gelmemektedir.

Expression trees are a very important construct in C# and on C# IEnumerable Temel Özellikleri the .NET ortam. (They are important in general, but C# makes them very useful.) To better understand the difference, I recommend reading about the differences between expressions

Joel CoehoornJoel Coehoorn 410k114114 gold badges576576 silver badges808808 bronze badges 3 3 The key of IEnumarable is that the backing collection is not enumerated until specifically expanded, be it a foreach or C# IEnumerable Temel Özellikleri accessor via an indexer. Unfortunately IEnumarable seems to be blindly used bey the lowest interface which now causes problems with asynchronous veri manipulation (e.

IEnumerable tipi veriyi önce belleğe atıp peşi sıra bellekteki bu data üzerinden belirtilen koşulları çhileıştırır ve veriye uygular.