Is it possible to specify formatting options for to_yaml in ruby?

ruby, yaml

Solution

This ugly hack seems to do the trick...

class Array
  def to_yaml_style
    :inline
  end
end

Browsing through ruby's source, I can't find any options I could pass to achieve the same. Default options are described in the lib/yaml/constants.rb.

Problem

The code ``` require 'yaml' puts YAML.load(" is_something: values: ['yes', 'no'] ").to_yaml ``` produces ``` --- is_something: values: - "yes" - "no" ``` While this is a correct yaml, it just looks ugly when you have a hash of arrays. Is there a way for me to get `to_yaml` to produce the inline array version of the yaml? An options hash can be passed to `to_yaml` but how do you use it? Edit 0: Thanks Pozsár Balázs. But, as of ruby 1.8.7 (2009-04-08 patchlevel 160), the options hash does not work as advertised. :( ``` irb irb(main):001:0> require 'yaml' => true irb(main):002:0> puts [[ 'Crispin', 'Glover' ]].to_yaml( :Indent => 4, :UseHeader => true, :UseVersion => true ) --- - - Crispin - Glover => nil ```

Original source