5 Basit Teknikleri için C# IEnumerator Temel Özellikleri

Error CS1579 foreach statement cannot operate on variables of type ‘Student’ because ‘Student’ does not contain a public instance or extension definition for ‘GetEnumerator’

Gönül you consistently write your C in a way that is easy to read, type-safe, memory-safe and reusable? I güç’t, and I’m not sure I want to invest the time to be able to.

If I were to describe the imperative solution above, “Begin with an empty list of names. Iterate through all the user objects performing the following process: Add to the list of user names the user’s name.”

Lambda ifadelerindeki isteğe bağlamlı parametreler - Lambda ifadelerindeki parametreler kucakin varsayılan değerler teşhismlayabilirsiniz.

They birey be lazy. This is a subtle, useful (and sometimes dangerous) property. We don’t calculate any values until MoveNext is called, meaning we defer the work of generating the collection until we iterate the collection.

Hi all i searched for IEnumerator but could not get to understand it.it would be great help if anyone helps me.

My answer will cause the code to hamiş compile and therefore I have less chance of shipping a bug in my code, kakım it would signal to me that I am using the wrong type.

If you're writing your own IEnumerator, you should certainly provide the IEnumerable. C# IEnumerator Kullanımı And really it's the other way around ... an IEnumerator is intended to be a private class that iterates over instances of a public class that implements IEnumerable.

Here we are supplying a function to be run on each C# IEnumerator nerelerde kullanılıyor element in users and returning a list that contains each of those items.

The basic reason you yaşama't go that direction (IEnumerator to a IEnumerable) is that IEnumerable represents a grup that güç be enumerated, but IEnumerator is a specific enumeratation over a set of items C# IEnumerator Temel Özellikleri -- you yaşama't turn the specific instance C# IEnumerator Nasıl kullanılır back into the thing that created it.

Bu durumda bir klas oluşturup onu IEnumerator dan implemente edip C# IEnumerator nerelerde kullanılıyor GetEnumerator metodunda return buyurmak üzere kullanabiliriz. IEnumeratordan implemente olan sınıflar literatürde Enumerator olarak geçer.

using the yield statement you'd only iterate over the items you need, whereas using the list version, you'd first iterate over all items in the list and then all the items you need.

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Şimdi ise kendi Enumerator Dershaneımızı oluşturalım. Bunun dâhilin bir derslik oluşturup IEnumerator intefacesi implemente etmemiz kifayetli olacaktır.