Mis on IO dispatcher'i roll ja eesmärk Kotlin Coroutines'is?

Dispatchers.IO in Kotlin Coroutines is designed for executing input/output operations that can be blocking, such as reading/writing files, network requests, or working with databases. It uses an optimized thread pool for such tasks, allowing the main thread to remain unblocked and resources to be managed efficiently.

Usage example:

withContext(Dispatchers.IO) {
    // Perform a blocking input/output operation
    val data = file.readText()
}

Thus, Dispatchers.IO helps perform heavy IO operations asynchronously, without slowing down the UI and without creating additional threads.