The Ultimate Guide To C# IEnumerable Nasıl Kullanılır

The Ultimate Guide To C# IEnumerable Nasıl Kullanılır

Blog Article

If your class is a custom collection class then yes, it should implement IEnumerable. In this case a public property for the inner list would be redundant. Imagine a simple class:

So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other veri sources, use IQueryable

An IEnumerable is a thing that emanet be enumerated...which simply means that it has a GetEnumerator method that returns an IEnumerator.

IEnumerable execute a select query on the server side, load veri in-memory on a client-side and then filter data

By adding on a Where statement you aren't actually doing much of anything, you're just adding an extra filter to the query so that later on, when you actually evaluate the sequence (in this case, when ToList is called) those filters will all be applied.

The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn başmaklık a Current property and a MoveNext method that returns a bool. I hayat highly recommend Eric Lipperts blog post about pattern matching

IEnumerable is a generic interface describing something that yaşama be enumerated (you hayat iterate through it and see/retrieve all of its elements). The content of this IEnumerable C# IStructuralComparable Temel Özellikleri dirilik have been pre-generated, or is live/lazily generated when you try to iterate through 'result' (IEnumerable).

You don't have to open a book and learn how to traverse the tree - but simply use the foreach statement on that object and you're done.)

Usually you don't use IEunumerable directly. It is the base class for a number of other collections that you are more likely to use. IEnumerable, for example, provides the ability to loop through C# IStructuralComparable Nasıl kullanılır a collection with foreach.

In a yetişek, it may be better to defer converting your query to a list until the very end, so if I'm going to enumerate through Leopards and Hyenas more than once, I'd do this:

This emanet be very C# IEnumerable Nasıl Kullanılır useful in certain circumstances, for instance in a massive database table you don't want to copy the entire thing into memory before you start processing C# IStructuralComparable nedir the rows.

IEnumerable is an interface that tells us that we güç enumerate over a sequence of T instances. If you need to allow somebody to see and perform some action for each object in a collection, this is adequate.

Bu tasarmızın müterakki satırlarında IEnumerator interface’ini detaylandırırken, kendi enumeratorümüzü oluşturmayıda işşacağız. C# IStructuralComparable Temel Özellikleri Ama şimdilik bu örneğimizde derlem yahut kol bünyelarının GetEnumerator metodunu kullanmamız teamülimizi yeterince görmektedir.

Short story about a uzunluk living on a fake tropical island / paradise planet, who was actually an adult CEO but didn't remember it