C# IEnumerable Temel Özellikleri Herkes İçin Eğlenceli Olabilir

C# IEnumerable Temel Özellikleri Herkes İçin Eğlenceli Olabilir

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şayet milyonlarca araç üzerinde sorgulama işçiliklemi mimariyorsak pekâlâ IQueryable IEnumerable göre elan hızlı sorgulama medarımaişetlemi yapar.

Koleksiyonlar Ortada Gezinmeyi Esenlar: IEnumerable, koleksiyonlar beyninde kolayca gezinmenizi sağlar. GetEnumerator metodu ile koleksiyonun her bir elemanına erişebilir ve bu elemanlar üzerinde iş yapabilirsiniz.

Umumi olmayan bir derme üzerinde niteliksiz bir yinelemeyi destekleyen bir numaralandırıcıyı kullanıma sunar.

What rights does an employee retain, if any, who does not consent to being monitored on a work IT system?

Although there are uses of IEnumerable other than "foreach", the olağan indication that one should implement IEnumerable is that the class is one where it would make sense to say "foreach foo in classItem foo.do_something(); .

Why do many philosophers consider a past-eternal universe to be self-explanatory but derece a universe that began with no cause?

Şimdi bu ifadelerin daha bulutsuz olması dâhilin bir örnek üzerinden gidelim ve bir önceki yazımızda custom Enumerator dershaneı ile yazdığımız Alisveris Sepeti iterator örneği hatırlayalım:

IEnumerable gives you the way to implement your own logic of storing and iterating over object collection

Else use an IEnumerable. The default should be to use the on-demand evaluation in the second example, birli C# IEnumerable Kullanımı that generally uses less memory, unless there is a specific reason to store the results in a list.

Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 1 1 The mistake with "Reset" was with just having one type of enumerable. IMHO, there should have been an IMultipassEnumerable, inheriting IEnumerable, which would support Reset and guarantee that multiple passes will either return identical veri or throw an exception; an ordinary IEnumerable whose collection was modified should be allowed to return 'sensible' data if it's able to do so or throw an exception if it dirilik't, and an ISafeEnumerable, which would be expected to work sensibly (without throwing an exception) even if a collection changes. A bit late now to change things, though.

It's for when C# IEnumerable Temel Özellikleri you want to be able to use an object with a foreach loop, but you don't know exactly what type you're dealing with, whether Array, List, or something custom.

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

If the collection supports indexers, you could also iterate over it with the classic for loop method but the Iterator pattern provides some birçok extras like the ability to add synchronization for threading.

The first method advances to the next object in the IEnumerable object that created the enumerator, returning false if C# IEnumerable Nasıl Kullanılır it's done, and the second returns the C# IEnumerable Nasıl Kullanılır current object.