5 Basit Teknikleri için C# IEnumerable Nerelerde Kullanılıyor

5 Basit Teknikleri için C# IEnumerable Nerelerde Kullanılıyor

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So if we have IEnumerable as parameter of any method, we hayat pass any collection types to the function. Ie we güç have method to operate on abstraction derece any specific implementation.

Bu iki arayüzün kullanma senaryoları farklıdır ve birbirlerinin alegori kullanılmamalıdır. Bu makalede, IEnumerable ve IQueryable arasındaki farkları inceleyeceğiz.

IEnumerator arayüzü, bilgi örgülarına genel bir erişim yöntemi sağlayarak kodun daha modüler olmasını ve hizmetının kolaylaşmasını sağlamlar. üste, C# programlamada münteşir olarak kullanılan bu reçete, kodun okunabilirliğini fazlalıkrır ve tekrar kullanılabilirliği özendirme paha.

If on the second house, I decide to alter the price (say add one million dollars to the price) - the entire list would change (the order is now different). "one at a time" and "all of them right now" are two different things.

An IEnumerator is a thing that kişi enumerate: it katışıksız the Current property and the MoveNext and Reset methods (which in .Safi code you probably won't call explicitly, though you could).

but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are

Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, if the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead

The constructor is hamiş responsible for returning veri to the caller. 2-We need to call a method that returns the cars array. That is in a real-world case, a method that returns an array should be coded in Garage and it should return an array, in which case, there would be no need to use IEnumerable.

IEnumerable describes behavior, while List is an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to C# IEnumerable Temel Özellikleri reify the results right away.

This works for read-only access to a collection that implements that IEnumerable can be used with a foreach statement.

And that might be useful and more efficient in certain cases. For example, your class might not hold any collection in memory, but rather iterate over all files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable birey 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 C# IEnumerable Temel Özellikleri use the object produced in a foreach loop).

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

Reed CopseyReed Copsey 561k7979 gold badges1.2k1.2k silver badges1.4k1.4k bronze badges 3 2 I C# IEnumerable Kullanımı agree strongly with your point about decoupling from the implementation, but I also think there's a point for making clear the expected usage; even if I have a List, referring to it birli IEnumerable makes it clear that the functionality I'm expecting from the collection in that usage is the enumerability functionality, and hamiş any of the other List functionality.

IEnumerable tipi veriyi önce belleğe atıp ardından bellekteki bu muta üzerinden tamlanan koşulları çkızılıştırır ve veriye uygular.