App::createaccepts a function. A closure is not possibile.
GETqueries where the same parameter appears multiple times, in order to pass a list of values for that parameter.
context.query_params, but as this is a hash map,
varonly gets one value, the last one.
request.path, is there a way to retrieve that as a vector or some kind of collection per parameter?
HashMap<String, MultiValued<String>>, but Context.set_query_params() expects a
use_middlewareor another special case error handling function registered. But any solution we come up with is either very verbose, or loses the Context along the way.
#[tryable]perhaps?) that allows the function it modifies to return a
set_error_handleror something like that.