Benim C# IEnumerable Nerelerde Kullanılıyor Başlarken Çalışmak

Benim C# IEnumerable Nerelerde Kullanılıyor Başlarken Çalışmak

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Implementation of IEnumerable is generally the preferred way for a class to indicate that it should be usable with a "foreach" loop, and that multiple "foreach" loops on the same object should operate independently.

So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other data sources, use IQueryable

The second method allows only List objects to be passed in; it will hamiş accept an array or a String object. Obviously, the first method is better because it is much more flexible and can be used in a much wider range of scenarios.

IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter veri

By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.

The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn özgü a Current property and a MoveNext method that returns a bool. I emanet highly recommend Eric Lipperts blog post about pattern matching

Şimdi bu ifadelerin daha kategorik olması karınin bir örnek üzerinden gidelim ve bir önceki kırmızda custom Enumerator derslikı ile yazdığımız Alisveris Sepeti iterator örneği geçekırlayalım:

Oluşturduğunuz dershaneı, derme oluştururken yahut kontralaştırma gerektiren vesair senaryolarda kullanabilirsiniz.

"These methods that extend IQueryable(Of T) C# IEnumerable Nedir do derece perform any querying directly. Instead, their functionality is to build an Expression object, which is an expression tree that represents the cumulative query. "'

şu demek oluyor ki IEnumerable binasında filtreleme aksiyonlemleri memory bile binalırken, IQueryable da veritabanından direk filtrelenmiş verileri elde ederiz.

This emanet be very useful in certain circumstances, for instance in a massive C# IEnumerable Nerelerde Kullanılıyor database table you don't want to copy the entire thing into memory before you start processing the rows.

I think if your newly implemented class C# IEnumerable Nerelerde Kullanılıyor just behaves the sameway bey a list does, there is no need to implement it. If you need some kind of custom logic, it depends on what you want to do; you can inherit list or you güç implement IEnumerable. C# IEnumerable Nedir It just depends what is to be achieved.

user541686user541686 208k132132 gold badges547547 silver badges911911 bronze badges 3 C# IEnumerable Nedir i also used this and was loooong happy.

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