5 Basit Teknikleri için C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

5 Basit Teknikleri için C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

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You gönül argue that you may be able to downcast IPerson to Person, but at this point I would answer telling you that you need to follow your own coding conventions: if you defined that you never return Person but IPerson then I would do it this way in the entire code base, and if you need a write-capable Parents property, then you return Person instead (and you avoid a cast later!).

I agree. IList is too tightly coupled with being both a ReadOnly collection and a Modifiable collection. IList should have inherited from an IReadOnlyList.

. Why not return IEnumerable? Calling code would have to cast, which they are unlikely to do without knowing the internals of the property they are accessing.

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Creating an extension method is sufficiently different in C# that it's worth taking the time to do the translation. A C# extension method is a static method declared in a static class, and its first parameter must be declared using the "this" keyword. So the C# version of this method looks like this: public static class PhvExtensionMethods

Birli I see it IEnumerable is a subset of the interface of ReadOnlyCollection and it does hamiş allow the user to modify the collection. So if the IEnumberable interface is enough then that is the one to use. Is that a proper way of reasoning about it or am I missing something?

Modülerlik: Yazılı sınavm projelerinde modüler bir yaklaşım sunarak kod yenidenını azaltır ve hizmetı kolaylaştırır.

After hopefully understanding your question, i think you have to distinguish between what you create and manage within your class and what you C# ReadOnlyCollectionBase Nedir make available to the outside world.

collection. Sometimes I use an array internally and return an IEnumerable to indicate intent. But most of these approaches have a very low signal-to-noise ratio; and that's absolutely critical to understanding code.

jasonjason 240k3535 gold badges431431 C# ReadOnlyCollectionBase Kullanımı silver badges529529 bronze badges 2 Really, IEnumerable has the same issue birli IList in principle, but implementing a single extra method (and a single extra property on the enumerator) was derece considered a burden, compared to the dozens you would C# ReadOnlyCollectionBase Temel Özellikleri need for IList (which List and indeed ReadOnlyCollection do implement, separately from their generic collection interfaces)

One might hamiş realize that the collection is read-only but the variable pointing to it C# ReadOnlyCollectionBase Nasıl Kullanılır is derece. What a ReadOnlyCollection would mean if I kişi reassign the variable itself to a new collection altogether. +1.

SingleOrDefault(IEnumerable, Func) Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

1 Also, in the provided case, the best center of knowledge on whether the invoice C# ReadOnlyCollectionBase Kullanımı güç be paid is the invoice itself, so it must have a property CanBePaid - so, a bit of cleverness eliminates the need to change "in 4 places"

4 Ilkgüz 2012 Hikmet Okumuş C# Readonly teşhismlı bileğhizmetkeni salt okunur moduna getirmektedir. Yani readonly olarak tanılamamlanan bir değişebilir sadece okunabilmektedir. Setleme mesleklemi bileğteamülkenin oluşturulduğu anda ya da oluşturulan sınıfın constructor metodu içerisinde konstrüksiyonlmaktadır.