devnull 0.1.0

DevNull behaves a null file, and works like an IO object. For example: dn = DevNull.new dn.puts "foo" # => nil (do nothing) dn.gets # => nil dn.read # => "" The library may be a good solution if you would like to switch whether an input/output file is needed. For example: def some_process(arg, logfile = nil) # You may set an IO object as 'logfile', and logs are written to the file. result = process1(arg) logfile.puts result if logfile result = process2(arg) logfile.puts result if logfile result = process3(arg) logfile.puts result if logfile end can be rewritten as follows: def some_process(arg, logfile = DevNull.new) logfile.puts process1(arg) logfile.puts process2(arg) logfile.puts process3(arg) end