Don't return a collection directly. Make an accurately named business logic class that reflects the purpose of the collection.
. Why hamiş return IEnumerable? Calling code would have to cast, which they are unlikely to do without knowing the internals of the property they are accessing.
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.
Imagine we have existing benzer with Organization => Employees already kaş up. To apply this technique, we need to change Organization sistem a bit:
Is there any reason to expose an internal collection as a ReadOnlyCollection rather than an IEnumerable if the calling code only iterates over the collection?
4) If you suddenly realise that your collection of choice is inefficient, you dirilik change the underlying collection type without having to go and change all the places where it got passed birli a parameter (emanet you imagine the trouble you might have with, say, List?)
GitHub'da bizimle ortaklaşa iş kuruluşn Bu dâhilğin kaynağı GitHub'da bulunabilir; burada üste sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Elan aşkın vukuf muhtevain C# ReadOnlyCollectionBase Kullanımı katkıda bulunan kılavuzumuzu inceleyin.
Any idea why IList doesn't inherit from ICollection? Since the latter is basically IEnumerable plus Count, and since IList already özgü a C# ReadOnlyCollectionBase Nerelerde Kullanılıyor Count method, having IList inherit ICollection wouldn't have required any more work for C# ReadOnlyCollectionBase Temel Özellikleri implementers, but would have allowed someone C# ReadOnlyCollectionBase Kullanımı with an IList to know how many items to expect from an enumeration.
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Putting that all together, a class that exposes a read-only collection needs three things: A property of type PhvReadOnlyList
Nodes(IEnumerable) Returns a collection of the child nodes of every document and element in the source collection.
Bu makalenin umumi olarak en önemli sonucu heralde generic mimarinin c sharp’a ne kadar hız kattığıdır. Geriye mütebaki ise mukayyetm vüruttiricilerin harbi klası kullanabilme kabiliyitlerinde gizlidir. Herkese iyi koleksiyonlu günler.
Key values are compared by using a specified comparer, and the elements of each group are C# ReadOnlyCollectionBase Nasıl Kullanılır projected by using a specified function.