Simple Kotlin flow builder class that shows the implementations of flowOf() , asFlow() and flow{..}

FlowBuilders.kt

suspend fun main() {

    /**
     * flowOf() -> Create a flow from fixed set of values
     */
    val singleValueFlow = flowOf<Int>(578943).collect { value ->
        println("Emitted Value : $value") // output : 578943
    }

    /*
     * flowOf() -> creating a flow with multiple data types
     */
    val multiValueFlows = flowOf<Any>(23, 2.90, false, "Android 1.0", 09.2008)

    multiValueFlows.collect { value ->
        println("multiValueFlows ->  Emitted Value : $value")
        //output :
        //multiValueFlows ->  Emitted Value : 23
        //multiValueFlows ->  Emitted Value : 2.9
        //multiValueFlows ->  Emitted Value : false
        //multiValueFlows ->  Emitted Value : Android 1.0
        //multiValueFlows ->  Emitted Value : 9.2008
    }

    /**
     * asFlow() -> extension function on various types to convert them into Flows
     */
    listOf("A", "B", "C", 4, true, 90.89).asFlow().collect { value ->
        println("AsFlow Emitted Value : $value")
        //output :
        //AsFlow Emitted Value : A
        //AsFlow Emitted Value : B
        //AsFlow Emitted Value : C
        //AsFlow Emitted Value : 4
        //AsFlow Emitted Value : true
        //AsFlow Emitted Value : 90.89
    }

    /**
     * flow {..} -> creates a flow from the suspendable block given
     */
    flow {
        kotlinx.coroutines.delay(2000)
        emit(890)
        emit(returnSomething())
    }.collect { value ->
        println("flow {} Emitted Value : $value")
        // output : 
        // flow {} Emitted Value : 890
        // flow {} Emitted Value : 340
    }
}

fun returnSomething(): Int {
    return 340
}