Can you explain what SupervisorScope is and how to use it in applications?

SupervisorScope is a special coroutine scope in Kotlin used to manage a group of coroutines where the failure of one coroutine does not lead to the cancellation of all others.

In a regular CoroutineScope, if one coroutine fails, all child coroutines are canceled. In SupervisorScope, coroutines operate independently: if one fails, the others continue to run.

Example usage:

import kotlinx.coroutines.*

fun main() = runBlocking {
    supervisorScope {
        val child1 = launch {
            println("Child 1 starts")
            delay(100)
            throw Exception("Error in child 1")
        }
        val child2 = launch {
            println("Child 2 starts")
            delay(200)
            println("Child 2 completed")
        }
        child1.join()
        child2.join()
    }
}

In this example, an error in child1 does not cancel child2. This is useful when you want a failure in one task not to interrupt the execution of others.