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 .