extension-methods Archives

Java, Programming

IT Nursery

Java equivalent to C# extension methods

I am looking to implement a functionality in a list of object as I would in C# using an extension method. Something like ...

May 30, 2022
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C#, Programming

IT Nursery

Code equivalent to the ‘let’ keyword in chained LINQ extension method calls

Using the C# compilers query comprehension features, you can write code like: var names = new string...

May 30, 2022
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Mocking Extension Methods with Moq

I have a preexisting Interface… public interface ISomeInterface { void SomeMethod(); } and I’ve extended this intreface using a mixin… public static class ...

May 25, 2022
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Extension methods must be defined in a non-generic static class

I’m getting the error: Extension methods must be defined in a non-generic static class On the line: public class LinqHelper Here is the ...

May 21, 2022
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Convert string[] to int[] in one line of code using LINQ

I have an array of integers in string form: var arr = new string { "1", "2", "3", "4" }; I need to ...

May 16, 2022
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In C#, what happens when you call an extension method on a null object?

Does the method get called with a null value or does it give a null reference exception? MyObject myObject = null; myObject.MyExtensionMethod(); // ...

May 10, 2022
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Why is there no ForEach extension method on IEnumerable?

Inspired by another question asking about the missing Zip function: Why is there no ForEach extension method on the IEnumerable interface? Or anywhere? ...

May 6, 2022
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What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)

Locked. This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new ...

May 4, 2022
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Can I add extension methods to an existing static class?

I’m a fan of extension methods in C#, but haven’t had any success adding an extension method to a static class, such as ...

April 30, 2022
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Which method performs better: .Any() vs .Count() > 0?

in the System.Linq namespace, we can now extend our IEnumerable’s to have the Any() and Count() extension methods. I was told recently that ...

April 28, 2022
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