Can you explain what Dispatchers.Default is in Kotlin and how it is used?

Dispatchers.Default in Kotlin is the default coroutine dispatcher designed for executing CPU-intensive tasks in a thread pool optimized for parallel work.

When to use Dispatchers.Default:

• For operations requiring significant computation (e.g., data processing, complex algorithms).
• When you need to avoid blocking the main thread (UI) and efficiently utilize processor resources.

Example of usage:

import kotlinx.coroutines.*

fun main() = runBlocking {
    launch(Dispatchers.Default) {
        // CPU-intensive task
        val result = (1..1_000_000).sum()
        println("Sum: $result")
    }
}

Thus, Dispatchers.Default helps to efficiently distribute computational tasks across threads without blocking the main application thread.