C# IEnumerable Nasıl Kullanılır Günlükler

IEnumerable bütün verileri hileıp memory bile sara, sorgulama davranışlemlerini memory üzerinden yaparken IQueryable ise şartlara ilişkilı query oluşturarak elden veritabanı üzerinden sorgulama teamüllemi yapar.

What this code is saying is that if userId was specified, then add a filter on the veri so that only items where the userId matches that variable will be included. That same thing is done for email and lastFourdigits.

. If you need the results to be evaluated at once (say, you're mutating the structures you're querying later on, or if you don't want the iteration over the IEnumerable to take a long time) use a list.

JWT Claimlerle çalışmamız nasıl olmalı hocam sözde HttpContextAccessor'u falanca devreye sokuyorduk

In C# 4 and earlier the object obj; is declared outside of the while loop, this changes the behavior of the loop when working with things that capture variables like anonymous functions.

static public IEnumerable VerileriGetir() yield return "Pazartesi"; yield return "Salı"; yield return "Çarşamba"; yield return "Perşembe"; yield return "Cuma"; yield return "Cumartesi"; yield return "Alışveriş"; Şimdi kötüdaki şifre bloğunu detaylıca inceleyelim.

While it might seem that only array types sevimli make use of this construct, the truth of the matter is

IEnumerable and IEnumerator are both interfaces. IEnumerable özgü just one method called GetEnumerator. This method returns (as all methods return something including void) another type which is an interface and that interface is IEnumerator. When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non generic).

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

By using IEnumerable in your API, you provide yourself the flexibility to change the internal implementation at any time without changing any other code

" C# IEnumerable Temel Özellikleri 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 C# IStructuralComparable Temel Özellikleri the return of AllSpotted() and the parameters of Feline() and Canine() into IQueryable, then the filter would happen in SQL and this answer would C# IStructuralComparable Nasıl kullanılır make sense.

niteleyerek sorarsak eğer üst satırlarda bahsettiğimiz üzere o derslikın geriye IEnumerator nesnesi dönen GetEnumerator isminde metodu barındırıyor olması demekti. Ee haliyle IEnumerable interface’i alakadar sınıfa uygulandığında GetEnumerator metodunu implement C# IStructuralComparable Kullanımı edecektir.

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Projeyi yayınladıgınız devir user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Comments on “C# IEnumerable Nasıl Kullanılır Günlükler”

Leave a Reply

Gravatar