[erlang-questions] Unable to call functions that are in a module in the same location

Steve Strong <>
Sun Aug 17 18:31:28 CEST 2014


The record will be initialised with the defaults as specified in the hrl.  The code and stacktrace in the gist still suggest that SpecCon#constraint.morphology is ‘undefined’ - so something between the record construction below and the crash within the gist must be modifying the record.  

--  
Steve Strong
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)


On Sunday, 17 August 2014 at 15:36, Yves S. Garret wrote:

> The record in question is "constraint".  The thing is, when I call it, it looks like this with none of the values initialized:
>  
> test() ->
>   Specie_Id = test,
>   Agent_Id = test,
>   CloneAgent_Id = test_clone,
>   SpecCon = #constraint{}, % <---- HERE IS WHERE THE FIRST INSTANCE IS CREATED
>   F = fun() ->
>     construct_Agent(Specie_Id, Agent_Id, SpecCon),
>     clone_Agent(Specie_Id, CloneAgent_Id),
>     print(Agent_Id),
>     print(CloneAgent_Id),
>     delete_Agent(Agent_Id),
>     delete_Agent(CloneAgent_Id)
>   end,
>  
>   mnesia:transaction(F).
>  
> My question is thus, if I make a record with #constraint{}, does that mean that all of its values are by default set to undefined or the default values that were specified in records.hrl?
>  
>  
>  
>  
> On Sat, Aug 16, 2014 at 2:35 AM, Steve Strong < (mailto:)> wrote:
> > I'm guessing that this:
> >  
> > Morphology = SpecCon#constraint.morphology,  
> >  
> > Is setting Morphology to 'undefined' - that's what the stack trace looks to be saying.
> >  
> > Cheers,
> >  
> > Steve
> >  
> > Sent from my iPhone  
> >  
> > On 16 Aug 2014, at 04:54, "Yves S. Garret" < (mailto:)> wrote:
> >  
> > > Hello,
> > >  
> > > This is my code:
> > > https://gist.github.com/anonymous/5b9b2c55a7684f5386e2
> > >  
> > > When I run my code inside of erlang (17.0), this is the error that I get:
> > > 7> genotype:create_test().
> > > {aborted,{undef,[{morphology,undefined,[sensors],[]},
> > >                  {morphology,get_InitSensors,1,
> > >                              [{file,"morphology.erl"},{line,8}]},
> > >                  {genotype,construct_Cortex,3,
> > >                            [{file,"genotype.erl"},{line,41}]},
> > >                  {genotype,construct_Agent,3,
> > >                            [{file,"genotype.erl"},{line,20}]},
> > >                  {genotype,'-create_test/0-fun-0-',0,
> > >                            [{file,"genotype.erl"},{line,434}]},
> > >                  {mnesia_tm,apply_fun,3,[{file,"mnesia_tm.erl"},{line,833}]},
> > >                  {mnesia_tm,execute_transaction,5,
> > >                             [{file,"mnesia_tm.erl"},{line,813}]},
> > >                  {erl_eval,do_apply,6,[{file,"erl_eval.erl"},{line,661}]}]}}
> > >  
> > > genotype.erl and morphology.erl are in the directory, so why can't genotype's function call morphology's functions?  Or am I missing something else entirely?
> > >  
> > > Thanks.
> > > _______________________________________________
> > >  
> > > erlang-questions mailing list
> > >  (mailto:)
> > > http://erlang.org/mailman/listinfo/erlang-questions
>  

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20140817/cae6fa9a/attachment.html>


More information about the erlang-questions mailing list