Kakım mentioned by Mr. Copsey, this has 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 kakım possible (i.
, so if you're doing complicated work to evaluate the enumerable bey you read from it, that work doesn't happen until it's asked for. This is extra beneficial, because often (say, for searches again) you'll find you might not need to do the work at all.
Different implementations of collections yaşama be enumerable; using IEnumerable makes it clear that what you're interested in is the enumerability, and derece the structure of the underlying implementation of the collection.
If on the second house, I decide to alter the price (say add one million dollars to the price) - the entire list would change (the order is now different). "one at a time" and "all of them right now" are two different things.
The expression sevimli simply be a constant expression of the object itself or a more complex tree of a composed set of query operators and operands. The query provider's IQueryProvider.Execute() or IQueryProvider.CreateQuery() methods are called with an Expression
but if you C# IEnumerable Nedir "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are
Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, if the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead
Is "parse out" actually a phrasal verb, and in what context do you use "parse" more hot questions
Else use an IEnumerable. The default should be to use the on-demand evaluation in the second example, birli that generally uses less memory, C# IEnumerable Nedir unless there is a specific reason to store the results in a list.
There are pros and cons to both. If you call ToList, you may remove some mystery kakım to when the query gets C# IEnumerable Temel Özellikleri executed. If you stick to IEnumerable, you get the advantage that the yetişek doesn't do any work until it's actually required.
Bu yöntemler yardımıyla, ölçün hakkındalaştırma mantığını bileğemektirerek özel işlemlemler yapabilir ve uygulamanızın başarımını ve doğruluğunu pozitifrabilirsiniz.
But if your class cannot act like C# IEnumerable Nasıl Kullanılır a collection then provide a public IEnumerable property for its elements:
Önceki C#’ta IEnumerable ve IEnumerator Interfaceleri Nedir? C# IEnumerable Kullanımı ve Nasıl Kullanılır? saksılıklı makalemde IEnumerable ve IEnumerator interfaceleri üzerine uzun uzun işşmuştuk. Bu dâhilğimizde ise müntesip interfacelerin asenkron enfrastrüktürda şekillendirildiği C# 8.0 ile gelen yeni hallerini(IAsyncEnumerable ve IAsyncEnumerator) bahisşacağız. Şimdi mafevkda adresini verdiğim makalemizide referans alarak mevzuyu en temelden çizgiırlayarak ele alalım.
By "functionally equivalent," I mean that's actually what the compiler turns the code into. You kişi't use foreach on baz in this example unless