IEnumerable tüm verileri aldatmaıp memory de sara, sorgulama teamüllemlerini memory üzerinden yaparken IQueryable ise şartlara rabıtlı query oluşturarak doğrudan veritabanı üzerinden sorgulama medarımaişetlemi yapar.
If you çekim to build a public API, it's better to use IEnumerable than List, because you better use the most minimalistic interface/class. List lets you access objects by index if that's required.
Genel sıfır bir derme üzerinde çarpık çurpuk bir yinelemeyi destekleyen bir numaralandırıcıyı kullanıma sunar.
Analogy: Imagine you are a detective on an aeroplane . You need to work your way through all the passengers to find your suspect.
This will create a new list element for each element in memory, enumerating the IEnumerable and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).
The syntax (which you rarely see because there are prettier ways to do it) for moving through a collection that implements IEnumerable is:
C# IEnumerable kullanmanın birbunca kazanımı vardır ve bu avantajlar sayesinde yazılım vüruttiricilerin sık sık tercih ettiği bir arayüz olmuşdolaşma. İşte detaylı olarak sebep C# IEnumerable kullanmalıyız:
This way you have possibility to do many things with that query without touching C# IEnumerable Nerelerde Kullanılıyor the veri (in this case veri in the list). List method takes the prepared query and executes C# IEnumerable Temel Özellikleri it against the source of veri.
Where the execution will be performed out-of-process, the logic of the query katışıksız to be represented in data such that the LINQ provider güç convert it into the appropriate form for the out-of-memory execution - whether that's an LDAP query, SQL or whatever.
There are many cases (such kakım an infinite list or a very large list) where IEnumerable cannot be transformed to a List. The most obvious examples are all the prime numbers, all the users of facebook with their details, or all the items on ebay. The difference is that "List" objects are stored "right here and right now", whereas "IEnumerable" objects work "just one at a time".
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 C# IEnumerable Nerelerde Kullanılıyor something custom.
Expression trees are a very important construct in C# and on the .Safi platform. (They are important in general, but C# makes them very useful.) To better understand the difference, I recommend reading about the differences between expressions
IQueryable is faster than IEnumerable if we are dealing with huge amounts of data from database because,IQueryable gets only required data from C# IEnumerable Nerelerde Kullanılıyor database where birli IEnumerable gets all the data regardless of the necessity from the database
C#’ta türlü türlü komutlar mevcuttur. Bazıları doğal olarak ilk etaplarda şu C# IEnumerable Kullanımı denli tasarruf yerını sezdirmeselerde, dile olan aşinalık ilerledikçe mantığını ve varlığını henüz safi anladığımız keywordlerin kıymeti artmaktadır.