Too bad the optimization isn't that smart: ```var mainCount = 0 mainCount++ thread { while( tru...

# getting-started

[karelpeeters]

Too bad the optimization isn't that smart:

var mainCount = 0
mainCount++

thread {
    while( true ) {
        println(mainCount)
        Thread.sleep(1000)
    }
}

could work without reference too, but the compiler generates it anyway.

[Sam]

Thx, how would it work without reference?

[Sam]

fun testLambda( block : () -> Unit ) {
thread {
while( true ) {
block()
Thread.sleep( 1000 )
}
}
}

[karelpeeters]

Well in my example mainCount isn't modified after it "leaks", so no reference is needed.

[Sam]

If mainCount was passed by value to the generated class, how would the generated class see the latest value?

[Sam]

Oh ok, got it