Re: [Yaml-core] new-retro implicits via regex

[trans. (T. Onoma) <tra...@ru...>]

On Monday 13 September 2004 01:13 am, Clark C. Evans wrote:
> So, if someone wanted the parser to distinguish between 12
> and '12', they could add:
>   %REGEX [-+]?(0|[1-9])[0-9,]*  tag:yaml.org,2002:int
> to their prologue, and bing, all unquoted integers will be
> reported as an integer.

I suspect we'd be seeing quite a bit of that line and a few others. Isn't this 
just a fine-grained version of a %SCHEMA directive?

> This proposal also gives pretty printers a bunch of flexibility,
> if a pretty-printer discovered that 20 percent of the tags in the
> document were integers, it could add this REGEX and then not
> bother with a !!int tag on those items.   In a similar way,
> booleans, dates, or even private types could be auto-mapped.

Let me get this straight. A type is determine by style and you're saying it 
_helps_ pretty printing? I am surprised to here you say that!!!!!

> So.  This proposal is another, flexible, way to add typing
> information to a YAML file in such a way that it doesn't
> require parser configuration, etc.  Since it gives a way
> to distinguish between 23 and "23" at the parser level,
> the plain-scalar-flag isn't needed.

Interesting.

T.

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