09:27 <Shorttail> What class or actor functions am I allowed to call from a constructor?

09:28 <SeanTAllen> Shorttail: `tag`

09:29 <vaninwagen> Cant you call regular ref functions once all fields are assigned?

09:29 <vaninwagen> Asking for a friend

09:30 <Shorttail> =/ I'm writing database code and open a connection and make sure tables are created in the constructor. What I've done in absense of non tag functions is to create primitives with an apply that return whatever I need, like opening a database connection

09:30 <SeanTAllen> once all fields are assigned, yes you can vaninwagen

09:31 <Shorttail> As soon as they're assigned?

09:31 <SeanTAllen> Shorttail: the pattern I use is to setup all dependencies and pass them to the actor (dependency injection!)

09:31 <SeanTAllen> Shorttail: its 5:30 am here and I am a little out of it, but my brain says "yes, as soon as they're assigned"

09:32 <SeanTAllen> best to test to verify my groggy

09:32 <Shorttail> I'll give it a try

09:46 <Shorttail> Seems to work. I guess my past trouble was using some function to calculate the value on an uninitialized variable

09:48 <vaninwagen> Pony has your back here, no worries :)

09:50 <Shorttail> Well, I would have liked for the thing I tried in the past to have worked, but I think I get the reasoning

09:52 <Shorttail> What cap does an actor constructor return? Can someone who's not the actor obtain a non-tag actor handle? Trying to figure out if I need to make all function of an actor private or not

09:52 <vaninwagen> Actors are always tag

09:53 <vaninwagen> To the outside. Inside of a behaviour the actor sees itself as ref

09:54 <vaninwagen> ref functions on an actor can only be called by itself, they are de facto private to itself, instance-private, so to say

09:54 <Shorttail> Thanks a lot, no need to use all the underscores then

09:55 <vaninwagen> Nah, keep them for later

09:56 <vaninwagen> What you could do is, is giving out a ref reference to the actor (this) to another class, thus this class can see the actor as ref and manipulate stuff on it

09:57 <vaninwagen> so actually not completely instance private, but the actor needs to give out a reference explicitly

09:57 <SeanTAllen> Shorttail: you can have a functional calculate the value of an unitialized value as long as its `fun tag`

09:58 <Shorttail> ...that makes sense, thanks

09:59 <Shorttail> vaninwagen: I think I get it

20:35 <endformationage> Any idea why I cannot access an obj literal's field here: https://playground.ponylang.org/?gist=b01f4f29fd73cfa2e9860940caac89a1

20:38 <aturley> endformationage BuildSomeTraited returns an object that conforms to the SomeTrait trait. that's all the compiler knows about it. so o1's type is SomeTrait, and SomeTrait doesn't have any fields.

20:40 <aturley> the compiler knows that o2 is being assigned from a reification of SomeTrait, and that reification *has* a field obj_fld, so you can access it when you call o2 because o2's type is that reified type.

20:43 <endformationage> Hmm. Thank you.

20:43 <aturley> you're welcome. i hope that helps

20:44 <endformationage> Indeed it does!

23:05 <m_v_m_> Hi all. I can not find any info in the web. Is there support for tail recursion in Pony lang?

23:10 <SeanTAllen> m_v_m_: its an optimization that will be applied to non-debug builds. you should not depend on it as you can play the stack with a debug build

23:11 <m_v_m_> Thank you. I see.