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Prepare playground file for lecture 'Buffers in SharedFlows and StateFlows'

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app/src/main/java/com/lukaslechner/coroutineusecasesonandroid/playground/flow/concurrency
- 9_buffer_in_sharedflow.kt

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	`1`	`+package com.lukaslechner.coroutineusecasesonandroid.playground.flow.concurrency`
	`2`	`+`
	`3`	`+import kotlinx.coroutines.coroutineScope`
	`4`	`+import kotlinx.coroutines.delay`
	`5`	`+import kotlinx.coroutines.flow.MutableSharedFlow`
	`6`	`+import kotlinx.coroutines.launch`
	`7`	`+import kotlin.system.measureTimeMillis`
	`8`	`+`
	`9`	`+suspend fun main(): Unit = coroutineScope {`
	`10`	`+`
	`11`	`+ val flow = MutableSharedFlow<Int>()`
	`12`	`+`
	`13`	`+ // Collector 1`
	`14`	`+ launch {`
	`15`	`+ flow.collect {`
	`16`	`+ println("Collector 1 processes $it")`
	`17`	`+ }`
	`18`	`+ }`
	`19`	`+`
	`20`	`+ // Emitter`
	`21`	`+ launch {`
	`22`	`+ val timeToEmit = measureTimeMillis {`
	`23`	`+ repeat(5) {`
	`24`	`+ flow.emit(it)`
	`25`	`+ delay(10)`
	`26`	`+ }`
	`27`	`+ }`
	`28`	`+ println("Time to emit all values: $timeToEmit ms")`
	`29`	`+ }`
	`30`	`+}`

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