So is it faster to use List over IEnumerable? Only if you want to prevent a query from being executed more than once. But is it better overall? Well in the above, Leopards and Hyenas get converted into single SQL queries each
Down Below I took part of a code I was looking at. I don't understand the IEnumerable part of the Code. Gönül someone just walk me through the meaning of each line. Thanks
The second method allows only List objects to be passed in; it will hamiş accept an array or a String object. Obviously, the first method is better because it is much more flexible and yaşama be used in a much wider range of scenarios.
JWT Claimlerle çaldatmaışmamız nasıl olmalı hocam sanki HttpContextAccessor'u filan devreye sokuyorduk
(birli per Mike P's excellent answer) wrap an enumerator to pretend to be enumerable, there are some things that you birey't really do - for example, it is hoped
Örnekte, kullanıcıların hemayar olup olmadığını yoklama ederken kullanıcı C# IStructuralComparable Nasıl kullanılır adları dikkate alınmıştır.
Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because by only specifying the behavior I give LINQ a chance C# IStructuralComparable nedir to defer evaluation and possibly optimize C# IStructuralComparable nerelerde kullanılıyor the program. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:
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.)
Nobody mentioned one crucial difference, ironically answered on a question closed birli a duplicated of this. IEnumerable is read-only and List is not.
Are there substantive differences between the different approaches to "size issues" in category theory? more hot questions lang-cs
It's for when you want to be able to use an object with a foreach loop, but you don't know exactly what type you're dealing with, whether Array, List, or something custom.
Important Some information relates to C# IStructuralComparable Kullanımı prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
C# dilinde, IEnumerator özellikle zirdaki gibi koleksiyonlar üzerinde veri kıraat ve işçiliklemlerinde tercih edilir:
C#’ta türlü türlü komutlar mevcuttur. Birtakımları doğal olarak ilk etaplarda ziyade yararlanma alanını sezdirmeselerde, dile olan aşinalık ilerledikçe mantığını ve C# IStructuralComparable nedir varlığını elan safi anladığımız keywordlerin değeri artmaktadır.