If an airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count:
Many of the LINQ methods, including Where, use deferred execution. In this case you dirilik think of the IEnumerable as a query, rather than the actual result takım.
Different implementations of collections emanet be enumerable; using IEnumerable makes it clear that what you're interested in is the enumerability, and derece the structure of the underlying implementation of the collection.
IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter data
An Enumerable is a class that sevimli give you Enumerators. It saf a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.
B. IEnumerator dirilik remember the current index when we pass from one method to another (it start working with current index) but IEnumerable birey't remember the index and it reset the index to beginning. More in this videoteyp
IEnumerable is a generic interface describing something that dirilik be enumerated (you güç iterate through it and see/retrieve all of C# IStructuralComparable Nasıl kullanılır its elements). The content of this IEnumerable emanet have been pre-generated, or is live/lazily generated when you C# IStructuralComparable Kullanımı try to iterate through 'result' (IEnumerable).
Koleksiyonlar Ortada Gezinmeyi Esenlar: IEnumerable, koleksiyonlar arasında kolay gezinmenizi katkısızlar. GetEnumerator metodu ile koleksiyonun her bir elemanına erişebilir ve bu elemanlar üzerinde muamelat yapabilirsiniz.
Bu şekilde koleksiyon kucakindeki elemanlara sırasıyla erişim C# IStructuralComparable Kullanımı sağlamlanabilir. Süflida bu kullanımı gösteren bir örnek bulunmaktadır:
When you write a query using IEnumerable you are using the advantages of deferred execution and your query running when it accessed.
" This is false, because the where clause is getting called on an IEnumerable and that only knows how to loop through objects which are already coming from the database. If you made the return of AllSpotted() and the parameters of Feline() and Canine() into IQueryable, then the filter would happen in SQL and this answer would make sense.
ümit ederim bu alfabedan sonrasında iki tipin münasebet, nerede ve nasıl kullanılması gerektiğine değgin ehliyetli bilgiye iye olmuşsunuzdur.
Reed CopseyReed Copsey 561k7979 gold badges1.2k1.2k silver badges1.4k1.4k bronze C# IStructuralComparable Temel Özellikleri badges 3 2 I 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 kakım 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.
Here is why it loads twice C# IStructuralComparable nedir kakım fewer items bey the first example on average. Let's say probability to find element at any position in the range of files is the same.