In my previous post I explained how useQuery can be used to retrieve the value from an immutable method. Now let’s go up a notch and see how to use on methods where the returned value may change ov...

React Query is often described as the missing data-fetching library for React, but in more technical terms, it makes fetching, caching, synchronizing and updating server state in your React appl...

Introduction Performance depends not only on the logic of our own code but also, what the compiler does with it and how the CPU executes it. Modern CPUs try to maximize its throughput by executin...

Introduction ArraySegment<T> is older and somewhat similar to Span<T>. ArraySegment<T> has a lot less usage limitations than Span<T>. Both are value types but Span<T&gt...

Implementing the sum of the items in an array is very simple. I think most developers would implement it this way: static int Sum(int[] array) { var sum = 0; for (var index = 0; index <...

I’ve been writing here many stories about enumeration in .NET. I know it’s hard to remember everything, specially when developing large projects with several other developers. I decided to develop ...

Introduction The C# compiler generates different code for the foreach keyword, based on the collection type. When it uses the enumerator, it gets an enumerator instance by calling the GetEnumerato...

Introduction I frequently find other developers using a ToList() or ToArray() at the end of every LINQ query: var sequence = Enumerable.Range(0, 10) .ToList(); foreach(var number in sequence...

Finding an item I already mentioned in the first article of this series that IEnumerable: doesn’t allow random access. doesn’t give access to any other collection information. This implies...

Count() On my previous article, I analysed the usage of IEnumerable strictly based on its contract. It was brought to my attention that LINQ, short for “LINQ to Objects”, optimizes some of the des...