On Wed, Jul 24, 2013 at 5:16 AM, Phillip Lord
<phillip.l...@newcastle.ac.uk>wrote:
>
>
> So, with this case, say I want the Italian label, in the set which is the
> value of the annotation key, find any list with the first element 'label,
> and
> third element "it", and return the second element. Of course, this can be
> done
> in Clojure, but the code gets complex very quickly.
>
> What I'd really want to be able to do is to use some sort of query; so I'd
> write a data structure like so:
>
> {:annotation
> #{(label ? "it")}}
>
> and have this match and return
>
> {:annotation
> #{(label "Ingredienti di Pizza" "it")}}
>
> which is the bit that matches.
>
This is considerably more complicated than the query given, but I have lib
which (when I push an update for better set, string, and map handling) will
allow you to do something not entirely unlike that:
macroparser.parsers> (run (map (both (keyword
:annotation)
(set (seq (parseq (symbol 'label)
(expression) (string
"it"))))))
'({:annotation #{(label "pizza" "it")}}))
{:annotation #{(label "pizza" "it")}}
macroparser.parsers>
i.e., match a map with one value whose key is :annotation and whose value
is a set containing a seq of 'label, anything, and "it".
--
Ben Wolfson
"Human kind has used its intelligence to vary the flavour of drinks, which
may be sweet, aromatic, fermented or spirit-based. ... Family and social
life also offer numerous other occasions to consume drinks for pleasure."
[Larousse, "Drink" entry]
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