On Wednesday, November 30, 2016 at 4:58:31 PM UTC, Richard Feldman wrote:
> Even more, it is exactly like described here
>> the author of Elm
> This is a gem. Not seen it before but there are some really useful ideas
>> in there.
>> It had not occurred to me that we can create record types with a 'hole'
>> in them, which can then be used to compose them together to build larger
>> records, but at the same time we can write functions that just operate on
>> whatever components of the record we choose as the level of abstraction to
>> re-use. I'm talking about the "Reusable Actions" section.
> Yikes, definitely don't do that! That link is from Elm 0.13 - back when
> everything was based around Signals, the Elm Architecture did not exist
> yet, and Evan was still trying out different approaches to figure out what
> worked best.
Tried it and it seems to work ok in 0.18. Only thing was the need to add
the 'alias' keyword to the record definitions. Its not a solution I would
reach for quickly, but decomposing record types and functions over them in
this way does seem entirely permissable within the language.
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