Hi all, i have seen some discussions about `Closea...

# stdlib

[uli]

Hi all, i have seen some discussions about Closeable.use(block) being suboptimal regarding multiple closeables at a time.
Therfore I have implemented a `CloseableScope`which can add closeables to a List like this:

try {
            CloseableScope {
                val noExceptionCloseable1 = NoExceptionCloseable1().autoClose()
                val bodyExceptionCloseable = BodyExceptionCloseable().autoClose()
                val closeExceptionCloseable1 = CloseExceptionCloseable1().autoClose()
                val closeExceptionCloseable2 = CloseExceptionCloseable2().autoClose()
                val noExceptionCloseable2 = NoExceptionCloseable2().autoClose()

                noExceptionCloseable1.doSomething()
                bodyExceptionCloseable.doSomething()
                closeExceptionCloseable1.doSomething()
                closeExceptionCloseable2.doSomething()
                noExceptionCloseable2.doSomething()
            }
        } catch (t: Throwable) {
            println(t)
        }

CloseableScope(block) opens the scope, Closeable.autoClose() adds a Closeable to the cleanup list and at the end of the scope, all Closeables on the list are closed.
The multi-exception semantics are modelled after java's try-with-ressource