From: Dave Thomas <Dave@...>
Date: 2002-01-03T07:03:33+09:00
Subject: [ruby-talk:30080] Problem with puts and friends


The new #puts has roughly the following logic:

   def puts(*args)
 
     for arg in args
       begin
         ary = arg.to_ary
         ary.each {|elem| puts(elem)}
       rescue NameError
         internal_puts arg.to_s
       end
     end

   end


So, if the argument can be converted into an array, it is, and the
result is then printed recursively element at a time. If it can't,
then it is printed as a string.

However, if the '-d' command line option is given, then Ruby reports
the failure to convert the parameter to an array:

     dave[~/tmp 16:01:29] ruby -d -e "puts 'hello'"
     Exception `NameError' at -e:1 - undefined method `to_ary' for "hello":String
     hello

This is somewhat disconcerting.

I'm not sure what the correct fix is. Should we change
rb_check_convert_type, or is there a better way?


Dave