[erlang-questions] Beginner questions

Ivan Uemlianin <>
Mon Dec 24 08:49:01 CET 2012


Dear Bob

This line should be part of the function population_monitor:init/1 (that's file population_monitor, function init, which takes one argument).

The error it complains of is {badrecord,state}, so perhaps the record S has been badly set up.

Are you learning erlang through neuroevolution :) ?  Do you have other reference resources?

Nadolig Llawen

Ivan


--
festina lente


On 24 Dec 2012, at 07:24, Bob Matthews <> wrote:

> Thank you Ivan
> 
> line 82: Population_Id = S#state.population_id,
> 
> Merry Xmas to you too :)
> 
> Bob
> Dunedin
> New Zealand
> 
> On 24/12/2012 8:14 p.m., Ivan Uemlianin wrote:
>> I dont have my computer with me but the error is at line 82 of the file population_monitor.erl.
>> 
>> Best wishes
>> 
>> Ivan
>> 
>> --
>> festina lente
>> 
>> 
>> On 24 Dec 2012, at 01:32, Bob Matthews <> wrote:
>> 
>>> The code that I am looking at is DXNN2 copyrighted to Gene Sher.
>>> 
>>> The error message I got which I am having difficulty interpreting is as follows....................
>>> 
>>> 4> population_monitor:start().
>>> {error,{{badrecord,state},
>>>         [{population_monitor,init,1,
>>>                              [{file,"population_monitor.erl"},{line,82}]},
>>>          {gen_server,init_it,6,[{file,"gen_server.erl"},{line,304}]},
>>>          {proc_lib,init_p_do_apply,3,
>>>                    [{file,"proc_lib.erl"},{line,227}]}]}}
>>> 
>>> I am using the latest versionR15B03
>>> 
>>> Thank you for you help
>>> 
>>> Bob
>>> Dunedin New Zealand
>>> 
>>> On 24/12/2012 11:58 a.m., Matti Oinas wrote:
>>>> Hi,
>>>> 
>>>> My first proposal is to change the editor to something more usable like emacs or if you prefer something different then notepad++, sublime text or eclipse + erlIDE. Everyone of these are able to show you the line numbers and offer syntax highlight features.
>>>> 
>>>> It would help a lot if you tell us which code you are looking at. Server callbacks probably mean gen_server callbacks so it doesn't matter if you are using windows or               linux.
>>>> 
>>>> Matti
>>>> 
>>>> On 12/24/2012 12:08 AM, Bob Matthews wrote:
>>>>> Hi
>>>>> 
>>>>> I have just started to learn Erlang............
>>>>> I am using Windows 7 on a PC
>>>>> 
>>>>> Question 1)  when I get an error message, what is the easiest way for me to find the exact line number?
>>>>> I use ms Word as an editor.
>>>>> 
>>>>> Question 2) the code I am looking at was run on Unix, on a server. 
>>>>> Part of the code talks about server call-backs etc.
>>>>> It is unclear how I translate that to a windows PC
>>>>> 
>>>>> Many thanks
>>>>> 
>>>>> Bob
>>>>> 
>>>>> 
>>>>> _______________________________________________
>>>>> erlang-questions mailing list
>>>>> 
>>>>> http://erlang.org/mailman/listinfo/erlang-questions
>>>> 
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