Re: [Yaml-core] YAML & Data::Stag

[Rich M. <rd...@cf...>]

At 12:37 PM -0800 1/22/03, Chris Mungall wrote:
>very very nice!

It should ease the pain considerably, though I still have to deal with
CycL's semantics.  The things I like about YACycl are that:

   *  Going from Perl <-> YACycL <-> CycL is trivial.

   *  I find YACycL easier to read than CycL (:-).

>hmmmmmmm - possibly insane thought - can you put coderefs in there, and
>add a basic interpreter for some mad perl/lisp hybrid?

You certainly could; the question is whether you would want to.  YAML is
a nifty way of dealing with the syntactic and structural levels; the
semantic level is up to you.  In my configuration files, I'm embedding
Perl extended regular expression components into field descriptions:

     - name:  pid
       head:  PID
       patt: '\s*(\d+)'                         <-----
       type:  canonical integer
       attr:  [ static, unique ]
       defn:  'process ID'
       note:  'The pid is recycled, eventually.'

I plan to stack the "patt" elements up in the running script and use them
to parse the output of a command (e.g., ps).  The "attr" elements then
tell my script how to handle the resulting data.  A "static" value only
needs to be collected once; a "unique" value can be used as a key.

One of the Lisp's big wins is its regularity (read, lack of :-) syntax.
This lets Lisp programmers build "little languages", at will.  I see no
problem with using YAML in the same way...

-r
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