C# IEnumerable Nasıl Kullanılır Ile ilgili detaylı notlar

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[Edit] - Needless to say - it's not "either this or that". often it would make good sense to use both a list and an IEnumerable in the same class. No computer in the world could list all prime numbers, because by definition this would require an infinite amount of memory. But you could easily think of a class PrimeContainer which contains an IEnumerable primes, which for obvious reasons also contains a SortedList _primes.

In case of IEnumerable, only lines up to the element of interest will be read from the file. In case of ToList call over the enumerable, the entire file would be read before even starting the search.

Different implementations of collections emanet be enumerable; using IEnumerable makes it clear that what you're interested in is the enumerability, and hamiş the structure of the underlying implementation of the collection.

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

Basıcı ki bu kudret “List,ArrayList” kadar collectionlarda elan sonra seviye bir mimariyle sağlamlanır C# IEnumerable Nasıl Kullanılır ama tığ gösterişsiz bir mimariyle kendi iterasyon yeteneğine iye classlarımızı yazabiliriz.Haydi sarrafiyelayalım.

but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are

IEnumerator C# IEnumerable Nedir interface inden gelen “Current” propertysinin get metodunda kendi tanımladığımız “Current” property’sini return ettik.

This way you have possibility to do many things with that query without touching the data (in this case veri in the list). List method takes the prepared query and executes it against the source of veri.

Yield ile kendimiz named iteretor'ler oluşturabiliriz. Örneğin programımızın 750TL den elan pahalı ürünleri getirmesini istiyoruz:

Kısaca IEnumerable bünyesında filtreleme medarımaişetlemleri memory de binalırken, IQueryable da veritabanından düver filtrelenmiş verileri elde ederiz.

Here is a very good article that details the differences between statement lambdas and expression lambdas and discusses the concepts of expression tress in greater depth: Revisiting C# delegates, expression trees, and lambda statements vs. lambda expressions.."

Evet hoca, onca yazdın çizdin anladıkta C# IEnumerable Nedir dü satır IEnumerable yahut IEnumerator interfacelerini kullanmadın?

RastoRasto 17.6k4848 gold badges161161 silver badges253253 bronze badges 5 1 Unfortunately you have to make your own. The most conservative approach would be for you to C# IEnumerable Nerelerde Kullanılıyor cache all the items inside your new enumerable, to handle enumerators that yaşama only be enumerated once, so there is no general class for this in the runtime.

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