Null Object Design Pattern - Why Do You Need It?
The article discusses the Null Object design pattern, which is used to eliminate the problems associated with handling null values in programming. In many cases, the occurrence of null in code leads to errors and additional conditions that must be checked at runtime. The Null Object pattern solves this problem by defining an object that acts as a substitute for null. This object can implement the appropriate interfaces and enable operations to be performed without needing to check if the object is null, which greatly simplifies the code. The author provides examples that illustrate how the Null Object pattern can be applied in practice, as well as the benefits of using it. Implementing this pattern contributes to increased code readability and improved stability by reducing the likelihood of errors related to illogical program behavior.