From: why the lucky stiff <ruby-talk@...>
Date: 2005-05-15T06:49:20+09:00
Subject: Re: How to output inline list  by  to_yaml

meruby@gmail.com wrote:

>require 'yaml'
>l = [1, 2, 3]
>l.to_yaml
>=> "--- \n- 1\n- 2\n- 3\n"
>
>How can I get inline list so that output of to_yaml will be
>=> "--- [1, 2, 3]"
>
The YAML library which comes with Ruby 1.8.2 won't allow this.  But 
current versions of Syck CVS simply require you to add a `to_yaml_style' 
method:

  >> l = [1, 2, 3]
  => [1, 2, 3]
  >> def l.to_yaml_style; :inline; end
  => nil
  >> puts l.to_yaml
  --- [1, 2, 3]

_why