How to output inline list by to_yaml

ruby-talk
1

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]"

2

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

3

Thanks, I was trying this with latest version of syck instead of CVS. I
have another question:
How can you do this for each items in Hash? for example

=>d = {'first', [1,2,3], 'second', [11,12,13]}
=>d.to_yaml
=> "--- \nsecond: \n- 11\n- 12\n- 13\nfirst: \n- 1\n- 2\n- 3\n"
irb(main):011:0> def d.to_yaml_style; :inline; end
=> nil
irb(main):013:0> d.to_yaml
=> "--- {second: [11, 12, 13], first: [1, 2, 3]}\n"

Instead I want
"--- {second: [11, 12, 13], \n first: [1, 2, 3]}\n"
so that each key/value are inline but each of them are on seperate
line? In short I am trying to reduce # of lines in yaml but keep it
human readable.