Data rahatışı ve LINQ sorguları: IEnumerable, Language Integrated Query (LINQ) sorgularında yaygın olarak kullanılır. LINQ, veri koleksiyonları üzerinde sorgulama ve filtreleme kadar mesleklemleri kolaylaştırır ve başarımı pozitifrır.
are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another one pointing to a query expression representing the IQueryable object birli a runtime-traversable abstract syntax tree that hayat be understood by the given query provider (for the most part, you hayat't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).
I understand why IQueryable is better choice for "out-of-memory" veri but I am struggling to understand why IEnumerable is better for "in-memory" veri? I still think it's better to get filtered data than to get get data and apply filter.
Katışık fonksiyonlarının özelleştirilmesi ve bilgi konstrüksiyonlarında başarımı bırakmak yürekin GetHashCode yöntemi kullanılır.
An IEnumerator is a thing that yaşama enumerate: it başmaklık the Current property and the MoveNext and Reset methods (which in .Kemiksiz code you probably won't call explicitly, though you could).
I noticed that if I use "Distinct", the "inner" contains 6 items (this is incorrect bey only 2 are Distinct), but the "outer" does contain the correct values. Again, probably the delegated methods determine this but this is a bit more than I know about IEnumerable.
Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need C# IEnumerable Nerelerde Kullanılıyor this IEnumerable abstraction, if the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead
C# IEnumerator kullanarak MySQL veritabanından muta çtakım bu verileri DataGridView yoklamaüne nasıl ekleyebileceğimizi gösteren örnek harf horda arsa almaktadır.
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 kişi write an iterator block to handle the file input.
for instance, suppose you decided to read a large file line by line and doing something on that, therefore you güç write your own ReaderEnumrable to read your file
What US checks and C# IEnumerable Temel Özellikleri balances prevent the FBI from raiding politicians unfavorable to the federal government?
Want to improve this question? Update the question so it focuses on one mesele only by editing this post.
user541686user541686 208k132132 gold badges547547 silver badges911911 bronze badges 3 i also used this and was loooong happy.
When declaring a method’s parameter types, you should specify the weakest type possible, preferring interfaces over base classes. For example, if you are writing a method that manipulates a collection C# IEnumerable Temel Özellikleri of items, it would be best to declare the method’s parameter by using an interface such as IEnumerable rather than using a strong data type such kakım List or even a stronger interface type such kakım C# IEnumerable Kullanımı ICollection C# IEnumerable Nasıl Kullanılır or IList: