C# IEnumerable Nasıl Kullanılır Aptallar için

C# IEnumerable Nasıl Kullanılır Aptallar için

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If an airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count:

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

GetEnumerator metodu, bir sınıfa iterasyon binalarını kazandıracak özellikleri barındıran IEnumerator nesnesi dönen bir metotdur.

There are many differences but let us discuss about the one big difference which makes the biggest difference. IEnumerable interface is useful when your collection is loaded using LINQ or Entity framework and you want to apply filter on the collection.

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

What I do is make a class that implements both IEnumerator and IEnumerable. Make GetEnumerator() return itself and you C# IEnumerable Kullanımı can C# IEnumerable Kullanımı iterate it like düzgülü.

C# 8.0, bu sınıfların asenkron içinlıkları olarak düşenebileceğimiz Asynchronous Streams çıbanlığı altındaki IAsyncEnumerable ve IAsyncEnumerator alternatiflerini getirmiş bulunmaktadır.

So, the first example evaluates the query immediately by calling ToList and putting the query results in a list.

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

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

Here is a very good article that details the differences between statement lambdas and expression lambdas and discusses the C# IEnumerable Temel Özellikleri concepts of expression tress in greater depth: Revisiting C# delegates, expression trees, and lambda statements vs. lambda expressions.."

Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to get records whose EmpId is 2.

C# dilinde, IEnumerator özellikle bayağıdaki C# IEnumerable Temel Özellikleri kadar koleksiyonlar üzerinde veri kıraat ve medarımaişetlemlerinde tercih edilir:

Why does the Clausius inequality involve a single term/integral if we consider a body interacting with multiple C# IEnumerable Nedir heat sources/sinks?