As mentioned by Mr. Copsey, this özgü the benefit of providing decoupling from the implementation, but I'm of the contention that a clear definition of the smallest subset of interface functionality as possible (i.
So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other veri sources, use IQueryable
Now the thing to note is that IEnumerable brought all the 5 records present in Salary table and then performed an in-memory filteration on the client side to get ferde 2 records. So more veri (3 additional records in this case) got transferred over the network and ate up the bandwidth unnecessarily.
For example, if you do not need to access items by index, but constantly insert items at the beginning of your collection and then remove items from the end, a Queue would be far more appropriate to use.
An IEnumerator is a thing that yaşama enumerate: it katışıksız the Current property and the MoveNext and Reset methods (which in .Safi code you probably won't call explicitly, though you could).
Örnekte, kullanıcıların tay olup olmadığını muayene ederken kullanıcı adları dikkate münfailtır.
While it might seem that only array types can make use of this construct, the truth of the matter is
The C# IStructuralComparable nerelerde kullanılıyor constructor is derece responsible for returning veri to the caller. 2-We need to call a method that returns the cars array. That is in a real-world case, a method that returns an array should be coded in Garage and it should return an array, in which case, there would be no need to use IEnumerable.
Else use an IEnumerable. The default should C# IEnumerable Kullanımı be to use the on-demand evaluation in the second example, birli that generally uses less memory, unless there is a specific reason to store the results in a list.
This works for read-only access to a collection that implements that IEnumerable birey be used with a foreach statement.
Will I run into issues if I connect a shunt 50 ohm resistor over a high impedance input pin on an IC?
There's 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 güç perform all kinds C# IStructuralComparable nedir 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. The computations won't actually be performed until the enumeration begins (i.e. until you run the foreach loop).
In simple words other major difference C# IStructuralComparable nerelerde kullanılıyor is that IEnumerable execute select query on server side, load data in-memory on client side and then filter veri while IQueryable execute select query on server side with all filters.
You should still avoid declaring the parameter type bey List. Using IList allows the caller to pass arrays and any other objects whose type C# IStructuralComparable Temel Özellikleri implements IList.