Kas on dispatcherid ja kuidas neid programmeerimises kasutatakse?

In programming, dispatchers are components or mechanisms responsible for managing the distribution of tasks, events, or messages between different parts of a program. For example, in Android, "Handler" and "Looper" are often mentioned; together they form a Message Dispatcher. It receives messages or tasks and queues them for sequential execution in the appropriate thread, usually the UI thread.

An example of using a dispatcher in Android is handling events in the main thread:

val handler = Handler(Looper.getMainLooper())
handler.post {
    // Code to be executed in the UI thread
}

Thus, dispatchers help organize asynchronous processing and thread management, ensuring the correct order and safety during task execution.