``` roots.asSequance().mapNotNull { file -> fil...
# russiant
tapac
11/23/2017, 8:30 AM Copy code
roots.asSequance().mapNotNull { file -> file.takeIf { it.exists() } }.firstOrNull(()tapac
11/23/2017, 8:30 AMroots.asSequance().mapNotNull { file -> file.takeIf { it.exists() } }.firstOrNull(()