2 Dakika Kural için C# IEnumerable Kullanımı

2 Dakika Kural için C# IEnumerable Kullanımı

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@OlivierJacot-Descombes: Short of using Reflection, there's no way of knowing whether an IList which allows anything of a given type to be stored by index will allow everything of that type to be stored by index.

Down Below I took part of a code I was looking at. I don't understand the IEnumerable part of the Code. Güç someone just walk me through the meaning of each line. Thanks

I understand why IQueryable is better choice for "out-of-memory" veri but I am struggling to understand why IEnumerable is better for "in-memory" data? I still think it's better to get filtered veri than to get get data and apply filter.

Consider that in your code example a new list created. I don't know what is m_states, but if this is a value types collection, you create a clone of the original list. In this way the returning list dirilik be manipulated form the caller Add/Remove/Update elements. without

Tabi ki bu kudret “List,ArrayList” kabilinden collectionlarda henüz ileri seviye bir mimariyle esenlanır lakin tığ basit bir mimariyle kendi iterasyon yeteneğine sahip classlarımızı yazabiliriz.Hadi başlangıçlayalım.

The syntax (which you rarely see because there are prettier ways to do it) for moving through a collection that implements IEnumerable is:

This is a nice video on youtube which demonstrates how these interfaces differ , worth a watch. Below goes a long descriptive answer for it.

It has a good performance when you are iterating through big objects or collections because it does hamiş load the entire object to memory in order to make iteration.

Yield ile kendimiz named iteretor'ler oluşturabiliriz. C# IStructuralComparable Temel Özellikleri Örneğin izlenceımızın 750TL den daha pahalı ürünleri getirmesini istiyoruz:

Is it legal to initialize an array via a functor which takes the array itself as a parameter by reference? more hot questions

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 .NET.

There's C# IStructuralComparable Kullanımı also the issues of deferred execution and unmanaged resources. IEnumerable takes use of the yield syntax, which mean you go over each item by-itself and sevimli C# IStructuralComparable Temel Özellikleri perform all kinds of computations before and after. And again, this happens one-by-one, so you don't have to hold all the collection when you start. C# IStructuralComparable Nasıl kullanılır The computations won't actually be performed until the enumeration begins (i.e. until you run the foreach loop).

IEnumerable C# IStructuralComparable Kullanımı is an interface that defines one method GetEnumerator which returns an IEnumerator interface, this in turn allows readonly access to a collection. A collection that implements IEnumerable güç be used with a foreach statement.

…IEnumerable interface’i ise bir sınıfa foreach mekanizması tarafından tanınması kucakin lazım yetenekleri/nitelikleri kazandırır. Kısaca enumerator yapkaloriı… çağlayık : C#’ta IEnumerable ve IEnumerator Interfaceleri Nedir? ve Nasıl Kullanılır?