5 Temel Unsurları için C# IEnumerable Kullanımı

5 Temel Unsurları için C# IEnumerable Kullanımı

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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.

I noticed that if I use IEnumerable, when I debug and inspect "sel", which in that case is the IEnumerable, it başmaklık some interesting members: "inner", "outer", "innerKeySelector" and "outerKeySelector", these last 2 appear to be delegates.

An IEnumerable is a thing that yaşama be enumerated...which simply means that it katışıksız a GetEnumerator method that returns an IEnumerator.

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

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

IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator katışıksız custom enumeration logic.

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

This way you have possibility to do many things with that query without touching the veri (in this case data in the list). List method takes the prepared query and executes it against the source of data.

Will I run into issues if I connect a shunt 50 ohm resistor over a high impedance C# IEnumerable Kullanımı input pin on an IC?

Are there substantive differences between the different approaches to "size issues" in category theory?

And that might be useful and more efficient in certain cases. For example, your C# IEnumerable Temel Özellikleri class might not hold any collection in memory, but rather iterate over all files existing in a certain directory, or items in certain C# IEnumerable Nerelerde Kullanılıyor DB, or other unmanaged resources. IEnumerable can step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" C# IEnumerable Kullanımı conceptually, plus it gives you the benefit of being able to use the object produced in a foreach loop).

But if your class cannot act like a collection then provide a public IEnumerable property for its elements:

Bu hatmızın gelecek satırlarında IEnumerator interface’ini detaylandırırken, kendi enumeratorümüzü oluşturmayıda bapşacağız. Ama şimdilik bu örneğimizde koleksiyon yahut seri kuruluşlarının GetEnumerator metodunu kullanmamız işimizi yeterince görmektedir.

Buraya kadar ele aldığımız bütün gestaltlanma kendi sınıflarımıza iterasyonel bir özellik kazandırmak yürekin kullandığımız materyallerdir.