kotlin-stdlib / kotlin.io.path / java.nio.file.Path / useLines useLines JVM JRE7 1.5 inline fun <T> Path.useLines( charset: Charset = Charsets.UTF_8, block: (Sequence<String>) -> T): T(source) Calls the block callback giving it a sequence of all the lines in this file and closes the reader once the processing is complete. Parameters charset - character set to use for reading text, UTF-8 by default. Return the value returned by block.