Using the 'combine' Function for Merging Flows

The 'combine' function in Kotlin allows you to merge multiple flows into a single flow. This is particularly useful in Jetpack Compose when you want to react to changes in multiple data streams simultaneously. By combining flows, you can create a more dynamic UI that updates based on changes in any of the supplied flows.

import kotlinx.coroutines.flow.*

fun main() = runBlocking {
    val flow1 = flow {
        emit("Hello")
        delay(1000)
        emit("from")
        delay(1000)
        emit("Flow 1")
    }

    val flow2 = flow {
        emit("World")
        delay(500)
        emit("from")
        delay(1000)
        emit("Flow 2")
    }

    flow1.combine(flow2) { value1, value2 ->
        "$value1 $value2"
    }.collect { combinedValue ->
        println(combinedValue)
    }
}