Is this article (and the one it refers to) taking a good or bad approach to
program structure?

http://7sharpnine.com/2016/10/03/building-an-spa-with-elm/

I copied the structure as a way of seeing how a program might perhaps be
broken down, but it feels like a very component based approach, given each
level has its own update function.  I learnt a fair bit about mapping
between message types, so it was useful.

I've broken my app down into pages using this structure, and so each page
has a view, model, etc.  Then the top level model has a model record for
each page.  This seems to work as it means the page doesn't need to know
how it's being used at the level above.  But the general conversations I
see suggests this is not the right way to go and to break things down more
into modules of related code.    So I guess back to the original question,
is this structure a good way to work?




On Mon, Oct 17, 2016 at 7:50 AM, Peter Damoc <pda...@gmail.com> wrote:

> update is a function that takes a message and a model and produces the
> updated version of the model. In some cases, update also can produce some
> requests for more input (http requests, requests for random numbers, ports
> requests) this is why the top level update has (Model, Cmd Msg) as return.
> Internal updates however, might not need these requests and can be
> simpler.
> What you see in the repository you linked is a pattern of nesting
> "components" that is currently passively discouraged.  (there use to be a
> set of examples around this but they are gone).
>
> The official recommendation around scaling is to focus on breaking the
> functionality into functions:
> https://guide.elm-lang.org/reuse/
>
>
>
>
> On Mon, Oct 17, 2016 at 12:00 AM, clouddie <contact.cloud...@gmail.com>
> wrote:
>
>> Hi, are there official guidelines for structuring large scale apps ? For
>> instance, what is the community take on things like
>> https://github.com/rogeriochaves/structured-elm-todomvc/tree/modular ?
>> This is quite neat although I cannot quite m'y head round the fact the
>> Update fonctions in TaskList deal with messages for Task ans TaskList, and
>> they do not respect thé standard (Model, Cmd Msg) signatures ?
>>
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