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Delegate example from C # in the depths of the confusion

I am considering this example:

List<Product> products = Product. GetSampleProducts() ;
products.Sort(
    (first, second) => first.Name.CompareTo(second. Name)
) ;
foreach (Product product in products)
{
    Console. WriteLine(product) ;
}

What function is actually called in the API when you do this? Does the compiler create a class that implements the IComparer interface?

I thought delegates were anonymous methods. There seems to be an anonymous interface implementation that is causing confusion.

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3 answers


The specific overload List<T>.Sort(Comparison<T>)

it takes Comparison<T>

.



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The Sort method used here , which takes a delegate (a pointer to a method) as an argument (in this case Comparison <T> , which is a function with two arguments returning an integer).



Not to be confused with Sort , which accepts IComparer <T>; ... Contraty for Java, C # does not support native interface implementation (or whatever you call it).

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Delegates are not anonymous. Your code seems to be creating a comparison delegate for (first, second) => first.Name.CompareTo(second. Name)

(which is itself an anonymous method).

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