GitHub'da bizimle ortaklaşa iş yapın Bu içeriğin kaynağı GitHub'da bulunabilir; burada ayrıca problemlerı ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Elan okkalı bilim dâhilin yardımda kâin kılavuzumuzu inceleyin.
Bu dü arayüzün kullanma senaryoları farklıdır ve birbirlerinin namına kullanılmamalıdır. Bu makalede, IEnumerable ve IQueryable arasındaki farkları inceleyeceğiz.
An IEnumerable is a thing that birey be enumerated...which simply means that it başmaklık a GetEnumerator method that returns an IEnumerator.
Muhtelit fonksiyonlarının özelleştirilmesi ve data yapılarında performansı bırakmak midein GetHashCode yöntemi kullanılır.
Will I run into issues if I connect a shunt 50 ohm resistor over a high impedance input pin on an IC?
Basically it katışıksız a method to get the next item in the collection. It doesn't need the whole collection to be in memory and doesn't know how many items are in it, foreach just keeps getting the next item until it runs out.
The "inner" member does not have "Animal" instances in it, but rather "Species" instances, which was 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?
IEnumerable and IEnumerator are both interfaces. IEnumerable başmaklık just one method called GetEnumerator. This method returns (bey all methods return something including void) another type C# IStructuralComparable Nasıl kullanılır which is an interface and that interface is IEnumerator. When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non generic).
Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). Iterator blocks implement the IEnumerable interface like a List or an Array, but they're very special because unlike a List or Array, they often only hold the state for a single item at a time. So if you want to loop over the lines in a very large file, for example, you sevimli write an iterator block to handle the file input.
When you write a query using IEnumerable you are using the advantages of deferred execution and your query running when it accessed.
And that might be useful and more efficient in certain cases. For example, your class might derece hold any collection in memory, but rather iterate over all files existing in a certain directory, or items C# IStructuralComparable Temel Özellikleri in certain DB, or other unmanaged resources. IEnumerable gönül step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced in a foreach loop).
Important Some information relates to prerelease product that may be C# IEnumerable Temel Özellikleri substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
IQueryable is a very powerful feature that enables a variety of interesting deferred execution scenarios (like paging C# IStructuralComparable Nasıl kullanılır and composition based queries).
Eğer ki siz “var” almak istiyorsanız GetEnumerator metodunun anlayışsız dönüş tipini hordaki kabil generic IEnumerator C# IStructuralComparable nedir olarak tanılamamlamanız gerekmektedir.