#!/usr/bin/ruby
local $, = "\n";         # sets the list separator to "\n"
say ("hello", "world");  # prints one item per line
if (Sys.open(\var fh, '<:encoding(UTF-8)', Sys.sidef)) {
    var lines = 1+(10.rand.int);
    say "\n** Reading ##{lines} lines from `#{fh.parent}':";
    fh.each { |line|
        say line.chomp;
        Number.new($.) == lines && break;
    };
    Number.new($.) == lines || (
        "#{$.} != #{lines}!".die;
    );
}