Eseményhorgok

Eseményhorgok, often translated as event hooks, are a programming concept used in software development. They allow a program to notify other parts of the system or external applications when a specific event occurs. This notification mechanism enables decoupling, where different components can react to events without needing direct knowledge of each other.

In essence, an event hook is a point in the code where a program can "hook into" the execution flow. When a predefined event happens, such as a user clicking a button, a file being saved, or a certain time elapsing, the program triggers the associated hook. This trigger then typically invokes a predefined function or a set of functions, known as callbacks or handlers, which are registered to listen for that specific event.

The primary benefit of using event hooks is flexibility and extensibility. Developers can add new functionality or modify existing behavior by simply attaching new event handlers to existing hooks, without altering the original code. This is particularly useful in plugin architectures, user interface development, and real-time data processing. For instance, a web browser might use event hooks to notify extensions when a page loads, allowing them to modify the content or perform other actions. Similarly, operating systems use event hooks to manage user input and system notifications. The concept is fundamental to many modern software design patterns, promoting modularity and ease of maintenance.