import os import io fn read_file(file string, cap int) []string { mut lines := []string{} mut f := os.open(file) or { panic(err) } defer { f.close() } mut r := io.new_buffered_reader(reader: io.make_reader(f), cap: cap) for { l := r.read_line() or { break } lines << l // println('Line: $l') } assert lines.len > 0 assert r.end_of_stream == true println('------------------------------------------------ cap: ${cap:6}; read: ${lines.len:3} lines') return lines } fn test_file_reader() { for cap := 64; cap <= 10000; cap += 256 { lines := read_file(@FILE, cap) assert lines.last() == '// my last line' } } // my last line