[erlang-questions] Can't run my command line Erlang program

Andrew Pennebaker <>
Fri Nov 15 04:59:48 CET 2013


I think I was trying to account for errors in parsing integers. In any
case, I think my program still works fine without this check, especially as
we agree that dialyzer proves it's unnecessary.

https://github.com/mcandre/ios7crypt/commit/8d7f7760b15ffa48a5113356803f620f3935c256#diff-7f4a95d512e55854e52ac3744eaafeb1L52


On Thu, Nov 14, 2013 at 8:00 PM, Kostis Sagonas <> wrote:

> On 11/15/2013 01:46 AM, Andrew Pennebaker wrote:
>
>> In particular, I'm confused what dialyzer doesn't like about line 60.
>>
>> 59  FirstOne = case is_binary(FirstTemp) of
>> 60    true -> binary_to_list(FirstTemp);
>> 61    false -> FirstOneRaw
>> 62  end,
>>
>> Not sure what's wrong. I tried using `_` instead of `false`, but got the
>> same warning. Should I use an if/else instead of case?
>>
>
> Dialyzer is telling you that it thinks FirstTemp will never be a binary in
> your program, so the case statement you have there is unnecessary. So,
> effectively it tells you that you can rewrite the code above to:
>
>       FirstOne = FirstOneRaw,
>
> The question is why do you expect that FirstTemp may be a binary at that
> point?
>
> Kostis
>



-- 
Cheers,

Andrew Pennebaker
www.yellosoft.us
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