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:
var kısmından az buçuk bahsedersek var burada gelen değeri en uz nasıl saklayabileceğini belirleyip yapısını bu şekilde ayarlıyor. Yani IQueryable kullanıyor.
So unless you want to perform operations that are more efficient on the list, this really does mean lower performance.
But now see the below code we have changed IEnumerable to IQueryable. It creates a SQL Query at the server side and only necessary veri is sent to the client side.
I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? ülkü solution (one line of code) would be if there was some class for that purpose. Or do I have to create my own ?
The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn özgü a Current property and a MoveNext method that returns a bool. I dirilik highly recommend Eric Lipperts blog post about pattern matching
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You don't have to open a book and learn how to traverse the tree - but simply use the foreach statement on C# IEnumerable Nerelerde Kullanılıyor that object and you're done.)
) without affecting original data." is confusing. Do you mean that the new list returned kişi been added to, and elements birey be C# IEnumerable Nasıl Kullanılır removed but no updates? I thought that because it returned ienumerable you birey modify the elements in the list, i.e. change a property like you said but you güç't add and remove items in the list. Is that correct?
There are pros and cons to both. If you call ToList, you may remove some mystery bey to when the query gets executed. If you stick to IEnumerable, you get the advantage that the program doesn't do any work until it's actually required.
Oh sure, you can use it to create your own custom collection types. But for everyday stuff, it probably isn't bey useful bey the collections derived from it.
Expression trees are a very important construct in C# and on the .NET ortam. (They are important in general, but C# IEnumerable Temel Özellikleri C# makes them very useful.) To better understand the difference, I recommend reading about the differences between expressions
Joel CoehoornJoel Coehoorn 410k114114 gold badges576576 silver badges808808 bronze badges 3 3 The key of IEnumarable is that the backing collection is hamiş enumerated until specifically expanded, be it a foreach or accessor via an indexer. Unfortunately IEnumarable seems to be blindly used as the lowest interface which now causes problems with asynchronous veri manipulation (e.
You should C# IEnumerable Nerelerde Kullanılıyor still avoid declaring the parameter type birli List. Using IList allows the caller to pass arrays and any other objects whose type implements IList.