From: jweirich@...
Date: 2001-08-08T18:26:38+09:00
Subject: [ruby-talk:19366] Re: how to redirect $sdtout

>>>>> "David" == David Alan Black <dblack@candle.superlink.net> writes:

    markus> $old_fh = select(LOGFILE);         # switch to LOGFILE for output
    markus> print "Countdown initiated ...\n";
    markus> select($old_fh);                   # return to original output
    markus> print "You have 30 seconds to reach minimum safety distance.\n";

    David> logfile = File.new("log.txt", "w+")
    David> old = $defout
    David> $defout = logfile
    David> print "Countdown initiated ...\n";
    David> $defout = old
    David> print "You have 30 seconds to reach minimum safety distance.\n";

This is something I've done in the past ...

    def io_redirect(io)
      saveio = $defout
      $defout = io
      yield
      $defout = saveio
    end

    io_redirect(LOGFILE) do
      puts "Countdown initiated ..."
    end
    puts "You have 30 seconds to reach minimum safety distance."


-- 
-- Jim Weirich     jweirich@one.net    http://w3.one.net/~jweirich
---------------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct, 
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)