Measure time

measureTime.kt

inline fun <T> measureTimeMillis(loggingFunction: (Long) -> Unit,
                                 function: () -> T): T {

    val startTime = System.currentTimeMillis()
    val result: T = function.invoke()
    loggingFunction.invoke(System.currentTimeMillis() - startTime)

    return result
}

val file: File =
       measureTimeMillis({ time -> Log.d(TAG, "Read and decode took $time") }) {
                readAndDecodeFile()
       }