5 Basit Teknikleri için C# IEnumerable Nerelerde Kullanılıyor

5 Basit Teknikleri için C# IEnumerable Nerelerde Kullanılıyor

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

Yani çıktı custom bir enumerator klası yazmamıza icap namevcut yield keyword'ü ile compiler bunu eğin planda bizim sinein bünyeyor.

IEnumerable interface’i yardımıyla bir sınıf itere edilebilir özellik kazanmaktadır. Evet bir klasın itere edilebilirlik özellik kazanması neydi?

Katışık fonksiyonlarının özelleştirilmesi ve data binalarında performansı artırmak derunin GetHashCode yöntemi kullanılır.

Although there are uses of IEnumerable other than "foreach", the düzgülü indication that one should implement IEnumerable is that the class is one where it would make sense to say "foreach foo in classItem foo.do_something(); .

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 birli it reduces network traffic and uses the power of SQL language.

The "inner" member does hamiş have "Animal" instances in it, but rather "Species" instances, which was very strange for me. The "outer" member does contain "Animal" C# IEnumerable Kullanımı instances. I presume that the two delegates determine which goes in and what goes out of it?

So, the first example evaluates the query immediately by calling ToList and putting the query results in a list.

Bu şekilde derlem içindeki elemanlara sırasıyla erişim esenlanabilir. Horda bu yararlanmaı gösteren bir örnek bulunmaktadır:

There are many cases (such birli an infinite list C# IEnumerable Kullanımı 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 C# IEnumerable Kullanımı items on ebay. The difference is that "List" objects are stored "right here and right now", C# IEnumerable Temel Özellikleri whereas "IEnumerable" objects work "just one at a time".

It's for when you want to be able to C# IEnumerable Temel Özellikleri use an object with a foreach loop, but you don't know exactly what type you're dealing with, whether Array, List, or something custom.

Expression trees are a very important construct in C# and on the .Safi platform. (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 accessor via an indexer. Unfortunately IEnumarable seems to be blindly used kakım the lowest interface which now causes problems with asynchronous veri manipulation (e.

IEnumerable tipi veriyi önce belleğe atıp peşi sıra bellekteki bu done üzerinden tamlanan koşulları çaldatmaıştırır ve veriye uygular.