[capnproto] Nested lists with pycapnp

[Wichert Akkerman]

Hi everyone,

I have a schema that uses a two-dimensional list. The schema looks like 
this:

struct Feature {
  coordinates @4 :List(List(Float64));
}

Where coordinates will be a list of 2-item lists. I can initialise the 
outer list easily:

feature = geo_schema.Feature.new_message()
coordinates = feature.init("coordinates", 10)

But I can't seem to initialise the inner lists. Is there a trick I'm 
missing?

Regards,
Wichert.

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Re: [capnproto] Schema Refactoring and Unique IDs

['Kenton Varda' via Cap'n Proto]

On Wed, Nov 25, 2020 at 3:43 PM Matt Stern  wrote:

> When I try to run capnp compile, I get the following:
>
> error: Import failed: /capnp/java.capnp
>

You will need to specify the same -I flags (import path) that you normally
specify to `capnp compile` when running the Java code generator.

If I comment out the Java bits and just compile in C++ (which works for
> me), will this have any effect on the unique IDs for the structs in my
> schema file?
>

No, the auto-generated IDs do not in any way depend on the contents of
other files. Auto-generated IDs are constructed by concatenating the parent
scope ID and the type name, and then taking a hash of that.

-Kenton

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