[erlang-questions] exception error: an error occurred when evaluating an arithmetic expression

[Roelof Wobben]

Thanks,

Now I can work on the other errors.

Roelof


Rick Pettit schreef op 10-2-2015 om 20:37:
> Naturally you’ll need to rename the file accordingly as well :-)
>
> -Rick
>
>> On Feb 10, 2015, at 1:36 PM, Rick Pettit <rpettit@REDACTED> wrote:
>>
>> You can try giving your module a legal name (i.e. try replacing the minus “-“ with an underscore “_”).
>>
>> -Rick
>>
>>> On Feb 10, 2015, at 1:35 PM, Roelof Wobben <r.wobben@REDACTED> wrote:
>>>
>>> Hello,
>>>
>>> I have this code  :
>>>
>>> -module(side-effects).
>>>
>>> -export([display/1]).
>>>
>>> display(Number) when Number > 0 ->
>>> display_acc(Number,[]).
>>>
>>> display_acc(0,Acc) ->
>>> io:format("Number:~p~n",Acc);
>>>
>>> display_acc(Number, Acc) ->
>>> display_acc(Number -1, [Number | Acc]).
>>>
>>> but as soon as I compile it, I see this message :
>>>
>>> ** exception error: an error occurred when evaluating an arithmetic expression
>>>     in operator  -/2
>>>        called as side - effects
>>>
>>>
>>> What does that error exactly mean and how can I solve the code so I can make it work ?
>>>
>>> Roelof
>>>
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>