RE: [Yaml-core] Duplicate Seq Keys?

[Oren Ben-K. <or...@ri...>]

Clark C . Evans wrote:
> | What should a YAML loader do with the following stream?
> | 
> | --- #YAML:1.0 
> |  - hello
> |  - world,
> |  10: I am sparse
> |  1: I am a duplicate sequence key
> ...
> | I presume this is an error condition, since its sister case 
> | with duplicate map keys is an error.
> 
> Exactly.

Not so... or, I should say, it is an error but for a different reason.
Example:

--- #YAML:1.0
- hello,
10: I am sparse
---

Is *also* an error. Because the *syntax model* is violated. Either a branch
is a series or it is keyed; it can't be both! That's regardless of whether
there are duplicate keys involved.

So, you can't mix '- ' style and 'N: ' style entries in the same list. It is
one or the other.

Have fun,

    Oren Ben-Kiki