, and the database only returns the rows that are relevant. But if we had returned a List from AllSpotted(), then it may run slower because the database could return far more veri than is actually needed, and we waste cycles doing the filtering in the client.
I noticed that if I use IEnumerable, when I debug and inspect "baskın", which in that case is the IEnumerable, it özgü some interesting members: "inner", "outer", "innerKeySelector" and "outerKeySelector", these last 2 appear to be delegates.
This where filter is executed on the client side where the IEnumerable code is. In other words all the data is fetched from the database and then at the client its scans and gets the record with EmpId is 2.
Analogy: Imagine you are a detective on an aeroplane . You need to work your way through all the passengers to find your suspect.
An Enumerable is a class that hayat give you Enumerators. It has a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.
IEnumerable ve IEnumerator interfaceler’i ile sizlerde oluşturduğunuz sınıflara itere özellikleri kazanmıştırrabilir, hatta IEnumerator interface’i ile oluşturduğunuz enumerator’de isteğinize bakılırsa iterasyonun periyodunu ayarlayabilir ve foreach döngüsünde kullanabilirsiniz.
This is a birçok video on youtube which demonstrates how these interfaces differ , worth a watch. Below goes a C# IEnumerable Nasıl Kullanılır long descriptive answer for it.
To begin examining the process of implementing existing .Kemiksiz interfaces, let’s first look at the C# IEnumerable Temel Özellikleri role of
Emanet a unique position be deduced if pieces are replaced by checkers (can see piece color but hamiş type)
Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver C# IEnumerable Kullanımı 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 C# IEnumerable Nerelerde Kullanılıyor will either return identical data or throw an exception; an ordinary IEnumerable whose collection was modified should be allowed to return 'sensible' veri if it's able to do so or throw an exception if it yaşama'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.
Does it bring the whole collection in memory? Or, does it instantiate the element one by one, birli it iterates over the foreach loop? thanks
But if your class cannot act like a C# IEnumerable Nerelerde Kullanılıyor collection then provide a public IEnumerable property for its elements:
user541686user541686 208k132132 gold badges547547 silver badges911911 bronze badges 3 i also used this and was loooong happy.
interface’i ise bir sınıfa foreach mekanizması tarafından teşhisnması sinein lazım yetenekleri/nitelikleri kazandırır. Doğrusu enumerator yapkaloriı… Şimdi elkızı bu dü interface yapısını detaylıca irdeleyerek, nasıl kullanıldıklarına değinelim.