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You can use String.Join() to convert a collection of items to a string with a separator (such as a comma). Here’s an example of using String.Join() to convert a List of strings to a comma-separated string: This results in the following comma-separated string: String.Join() can be used on wide variety of input: I’ll show a … Read more
The simplest way to convert an array to a list is with the ToList() Linq method: This outputs the following: Besides using ToList(), you can also use the list constructor or AddRange(). Before I show those, I’ll explain why you’d want to use these special methods instead of just adding items individually to a new … Read more
The simplest way to convert a list to an array is to use the List.ToArray() method: This outputs the following: Internally, the List<T> class stores elements in a dynamically sized array (it resizes when necessary). So under the hood, List.ToArray() uses Array.Copy() to copy the list’s internal array to a new array. This is very … Read more
This article shows code for converting a hex string to a byte array, unit tests, and a speed comparison. First, this diagram shows the algorithm for converting a hex string to a byte array. To convert a hex string to a byte array, you need to loop through the hex string and convert two characters … Read more
If I want to change the behavior of a method from the outside, I can pass in a function pointer. This approach exists in every language, and is one way to implement the Strategy Pattern. In C#, function pointers are referred to as delegates, and the two most common ones are Action and Func. The … Read more
The Large Class code smells refers to a class that has too many responsibilities. It’s doing too much. Ideally a class should only have one responsibility (Single Responsibility Principle). Code Smell: Large Class Definition: A class has too many responsibilities. Solution: Large Class code smell example Here’s an example of the Large Class code smell … Read more