C# IEnumerable Nasıl Kullanılır Günlükler

C# IEnumerable Nasıl Kullanılır Günlükler

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The difference between IQueryable and IEnumerable is centered around this point. IQueryable builds expression trees whereas IEnumerable does hamiş, at least hamiş in general terms for those of us who don't work in the secret labs of Microsoft.

I noticed that if I use IEnumerable, when I debug and inspect "yığın", which in that case is the IEnumerable, it başmaklık some interesting members: "inner", "outer", "innerKeySelector" and "outerKeySelector", these last 2 appear to be delegates.

As per other answers, the evaluation of the result was deferred until calling ToList or similar invocation methods for example ToArray.

But now see the below code we have changed IEnumerable to IQueryable. It creates a SQL Query at the server side and only necessary veri is sent to the client side.

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

IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator has custom enumeration logic.

So the difference between IQueryable and IEnumerable is about where the filter logic is executed. One executes on the client side and the other executes on the database.

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

The major difference between IQueryable and IEnumerable is that IQueryable executes query with filters whereas IEnumerable executes C# IStructuralComparable Temel Özellikleri the query first and then it filters the veri based on conditions.

Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 1 1 The mistake with C# IStructuralComparable Nasıl kullanılır "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 C# IStructuralComparable nedir passes will either return identical veri or throw an exception; an ordinary IEnumerable whose collection was modified C# IStructuralComparable Kullanımı should be allowed to return 'sensible' veri if it's able to do so or throw an exception if it can'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.

Then with a IQueryable the generated SQL will contains “where name = “a”, but with a IEnumerable many more roles will be pulled back from the database, then the x.name = “a” check will be done by .Safi.

Fevkdaki hatada Calisan sınıfının bir GetEnumerator bâtınermediğini belirtiyor. şu demek oluyor ki buradan da şu çıfamilyamı yapabiliriz;

Bu yazgımızın gelecek satırlarında IEnumerator interface’ini detaylandırırken, kendi enumeratorümüzü oluşturmayıda işşacağız. Ama şimdilik bu örneğimizde derlem yahut kol binalarının GetEnumerator metodunu kullanmamız aksiyonimizi yeterince görmektedir.

Below mentioned small test might help you understand one aspect of difference between IQueryable and C# IStructuralComparable nedir IEnumerable. I've reproduced this answer from this post where I was trying to add corrections to someone else's post