C# IEqualityComparer Kullanımı Aptallar için

C# IEqualityComparer Kullanımı Aptallar için

Blog Article

You get a nice simple bool Equals(T other) function and there's no messing around with casting or creating a separate class.

If you need to support custom GetHashCode() functionality, use the alternative constructor to provide a lambda to do the alternative calculation:

Temel komut satırı icraatından kompleks emeklevselliklere ehil kayıtlara denli her şeyi C# ile tasarlayabilirsin.

CodeFuller's answer will work fine, but as an alternative option, you could use MoreLINQ and its DistinctBy method, which would avoid you needing to create a separate class at all:

GetValueProperties is implemented as a (single-line) method; to fetch the "class properties" you use the lambda expression inline; the code should be consistent (either do both Where expressions inline, or both as helper methods)

What's the necessary and sufficient condition for a real sequence to be written bey the self-convolution of another real sequence?

The following example creates a dictionary collection of objects of type Box with an equality comparer. Two boxes are considered equal if their dimensions are the same. It then adds the boxes to the collection.

If you C# IEqualityComparer Nasıl Kullanılır look at the definition of Distinct there is C# IEqualityComparer Kullanımı only one generic type parameter involved (and derece one TCollection used for input and C# IEqualityComparer Nasıl Kullanılır output collections and one TComparison for the comparer).

You will need some properties that will allways be available on your type and that provide a good enough idea of what might be considered equal. All theadditional properties however should only go into the expensive Equals-method.

– Eric Lippert Commented Apr 8, 2013 at 16:01 @EricLippert: What difficulties would arise if one allowed return type to be considered in method overloading only in cases where the return type was either being coerced to a particular type, or was passed to a method where all overloads of proper arity had the same type for that parameter (e.

Bey we birey see, to satisfy the interface, we need to implement two methods: Equals and GetHashCode. Additionally, we C# IEqualityComparer Temel Özellikleri ve Kullanımı need to take note that this interface is a contravariant interface.

The flexibility that this solution offers might be useful when one deals with the movie's sequel. The sıkıntı is that Julia Roberts plays two roles there: Tess Ocean and herself:

Kıymetiharbiye tipleri bağımsızdır ve birinin değeri ötekini etkilemezken, referans tipleri aynı hafıza adresini paylaşarak birbirlerini etkileyebilirler.

Eşya olmayan dershane ve C# IEqualityComparer Nasıl Kullanılır mimarilar, birincil konstrüksiyonlandırıcı parametreleri muhtevain her çağ bu davranışı istemeyebilir.