Eseményalapú

Eseményalapú is a Hungarian term that translates to "event-driven" in English. It describes a programming paradigm or a system architecture where the flow of control is determined by events. Events can be user actions, such as clicking a mouse button, or system-generated occurrences, like a file being written or a sensor detecting a change.

In an event-driven system, components do not actively poll for changes. Instead, they register themselves to be notified when specific events occur. When an event is triggered, the system dispatches it to all registered listeners or handlers, which then execute predefined actions in response. This contrasts with traditional procedural programming where execution follows a predetermined sequence of calls.

Event-driven architectures are common in graphical user interfaces (GUIs), where user interactions are the primary drivers of application behavior. They are also widely used in real-time systems, reactive programming, and distributed systems where components need to respond asynchronously to external stimuli. The benefits include improved responsiveness, better modularity, and increased efficiency as components only perform work when necessary. The core concept is a continuous loop that waits for events, processes them, and then waits again.