Hi all,
There is something I can't express using "collect" or "accumulate" and I
would like to have your opinion.
Let's imagine I have the following types :
# a country type
* declare Country
name : String
end
*
# a city type holding a reference to its country
* declare City
name : String
country : Country
end
*
Let's imagine I have all Country and City objects into the working memory.
I want to get the set of Countries corresponding to Cities whose name
starts with "X".
I have the impression that I need a kind of (nonexistent right?)
"collect" syntax that would look like the "accumulate" syntax (a kind of
"anonymous" accumulate function):
# meaning I want to collect $country objects and not City objects
$countries : HashSet() from collect (City($name matches "X.*",
$country : country)*, $country*)
Or a home made accumulate function that builds a set of countries:
# custom "buildset" accumulate function
$countries : HashSet() from accumulate (City($name matches "X.*",
$country : country), *buildset*($country))
Do you see any other (possibly out of the box) solution?
Many thanks in advance for your answers,
Best regards,
Bruno.
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