Code Freely, Live Fully
Code Freely, Live Fully
Introduction Most applications require business rules, such as data validation. It’s crucial to implement these rules in a way that’s flexible, clear, and easy to maintain. The Specification pattern offers a solution, allowing the creation of reusable business rules that…
Introduction In another article we discussed the Lock pattern. In this we used the sync.Mutex struct. The problem with this struct is, is that it doesn’t distinguish between reading from a resource, like accessing an element in a vector, and writing…
Introduction Sometimes in a multi-threaded program, there is a need to protect a resource from concurrent access, that is access by multiple threads. One way of doing this is by implementing a Monitor Object. Implementing this pattern usually involves the…
Introduction The Balking Pattern might not be widely known, but it plays a crucial role in preventing certain actions on objects based on their state. For instance, attempting to read the contents of an unopened file should not be allowed.…
Introduction Sometimes, when your program has a task that takes a lot of time, like working with databases, web services, or complex calculations, you might want to let it happen in the background. This way, your program can keep running…
Introduction The Servant pattern is a way of organizing code where one special object helps out a bunch of other objects. This helper object provides some functions to these objects, so they don’t have to do the same things over…
Introduction The extension object pattern is a clever way to add new features to an existing object without changing its original code. It’s like wrapping a present within a present – the outer one directs requests to the inner one.…
Introduction In delegation, you delegate a certain request to an object to a second object, which we call the delegate. This is almost like a subclass sending a request to its parent class. In Go we can achieve this functionality…