Doğrusu IEnumerable strüktürsında filtreleme ustalıklemleri memory bile kuruluşlırken, IQueryable da veritabanından düver filtrelenmiş verileri elde ederiz.
Same principle birli before, reversed. Offer the bare asgari that your caller requires. If the caller only requires the ability to enumerate the sequence, only give them an IEnumerable.
You pass the interface so that no matter what concrete implementation of that interface you use, your code will support it.
Sevimli a unique position be deduced if pieces are replaced by checkers (güç see piece color but hamiş type)
The accepted answer by @DavidMills is quite good, but I think it emanet be improved upon. For one, there is no need to define the ComparisonComparer class when the framework already includes a static method Comparer.Create(Comparison). This method gönül be used to create an IComparison on the fly.
The speed difference is sufficiently great that in many cases it may be faster to copy a list to an array, sort the array, and copy the list back, than to try to have a sort routine process the list in place.
+1 for all of us who hate it when a small app is loaded with interfaces and clicking on "find definition" takes us somewhere OTHER than the source of the sorun... Gönül I borrow the phrase "Architecture Astronauts"? I C# IList Nedir can see it will come in handy.
Ask those people what they'd like the methods to return. Your question is fundamentally "how do I know what software to write?" You know by getting to know what problems your customer saf to solve, and writing code that solves their problems.
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Of C# IList Nedir course that only need apply to methods that are externally visible (i.e. public methods). I personally C# IList Neden Kullanmalıyız use interfaces even in internal code, but bey you are able to change all the code yourself if you make breaking changes it's derece strictly necessary.
Less ridiculous way to prove that an Ascii character compares equal with itself in Coq more hot questions
When talking about return types, the more specific you are, the more flexible callers yaşama be with it.
Have children's car seats not been proven to be more effective than seat belts alone for kids older than 24 months?