[erlang-questions] Why we need a -module() attribute?
Thu Feb 25 01:53:00 CET 2016
On 02/25/2016 01:24 AM, Richard A. O'Keefe wrote:
> On 24/02/16 10:46 pm, Konstantin Vsochanov wrote:
>> On 2/23/16 01:30 , Richard A. O'Keefe wrote:
>>> I do not recall ever seeing -module coming up here before.
>>> I certainly don't recall a long thread like this one.
>>> Maybe because people who stumble over -module() too shy to write to
>>> erlang mail list?
> That seems highly unlikely. People complain about all sorts
> of other things; why should they be shy about this one alone?
They're not. What is highly unlikely is to hear about small problems on
the mailing list, because few beginners register here, and it's rarely
to ask beginner questions (Roelof posts a lot but is just one). Few
people care about that sort of thing once they're used to it. Same goes
for all small annoyances brought up by beginners again and again.
You are a lot more likely to hear beginner feedback in person (often in
the form of a question: if a question comes up often, that's a smell, or
by making mistakes) or where beginners go to get help (IRC,
StackOverflow and so on). But most of that feedback will usually not go
as far as the one in this thread which points out something that is felt
A similar but larger pain point that's been rationalized by people used
to Erlang is the expression separators. It comes up regularly on the
mailing list, but comes up a lot more outside, and even more when
teaching people. It's probably the most frequent beginner mistake. You
can explain it off perfectly, sure, but it'll remain the most frequent
beginner mistake. The only way to fix that is to forget those perfect
explanations, admit this is a problem and fix it. (I would write the
fix, Steve, but it's even less likely that this kind of patch would get
merged as things stand today.)
I get the feeling from this mailing list that if something has a perfect
explanation there's no reason to change it. That's partly why I think
maps are a miracle (we had the dict module already after all). But
that's wrong. Things that give unnecessary trouble to people should be
changed, regardless of the accuracy of the explanation you can give to
people when they run into trouble/get fed up with it.
Author of The Erlanger Playbook,
A book about software development using Erlang
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