[ANN] YAML.rb 0.49.2 -- YPath, seq-in-seq and elimination of '+/-' implicits

ruby-talk
1

Okay, my unwilling accomplices.

YAML.rb 0.49.2 is another subrelease before 0.50. I don’t know exactly
why I want to hit 0.50 with a truly solid release, but it’s a dangerous
fixation I have with numbers that only grows worse as the years slice
through me.

It’s not that 0.49.2 isn’t solid, but it has a number of new features
and I’m anxious to test them before 0.50. They are as follows:

  • Much improved YPath support. Here’s a taste (from the
    YamlTestingSuite) of what we can do now:

    data:
    - one:
    name: xxx
    - two:
    name: yyy
    - three:
    name: zzz
    ypath: /*/one/name|//three/name
    expected:

    • /0/one/name
    • /2/three/name

  • Other examples are in the `yts/YtsYpath.yml’ test.

  • YAML.rb now supports the brand new sequence-in-sequence shortcut.
    This allows you to stack the dashes on your nested sequences:

    yaml: |
    - - - one
    - two
    - three
    ruby: |
    [ [ [ ‘one’, ‘two’, ‘three’ ] ] ]

  • As consequence of the above addition, the boolean ‘+’ and '-'
    implicits are no longer available:

    yaml: |
    - +
    - -
    ruby: |
    [ ‘+’, [ nil ] ]

··· 
   yaml: |
     - true
     - false
     - yes
     - no
   ruby: |
     [ true, false, true, false ]

Thanks for your time. Many thanks to the users who continue to evaluate
these releases. If I haven’t responded to your email, please send it
again. I’m more than a tad absent-minded of late:

_why