Code Freely, Live Fully
Code Freely, Live Fully
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 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 The Singleton may be one of the most familiar design patterns. However sometimes it is necessary not have just one object of a certain type in your program, but several. That is when the Multiton comes in. The Multiton…
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 Rust we can achieve this by…
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 Sometimes when locking data or objects it can be handy to reduce the overhead of acquiring a lock on such objects by first checking whether a lock is really necessary. This typically used in combination with lazy initialization in…
Introduction Especially in multi-threaded applications it can be necessary to synchronize properties between objects, or at least be notified of changes on certain properties. This is where the Binding Properties comes in, which is basically a form of the Observer…
Introduction Many languages have the concept of a context manager. This is a way of efficiently and automatically cleaning up resources. To be fair, this is just a first attempt, please let me know if you have suggestion on how…
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 Using a fluent interface can make your code easier to understand. This pattern allows you to link method calls, where each method returns the object or context. When implemented well, it creates a specialized language for a specific domain.…
Introduction Sometimes, it’s handy to separate when a method is called from when it actually runs. That’s where the Active Object design pattern comes in. It lets us build more flexible and concurrent systems. One key feature is that each…
Introduction Sometimes you need to decouple method execution from method invocation. In such cases the Active Object design pattern is a good choice. It allows for more flexible and above all concurrent systems. One the of the hallmarks of this…
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…