cara/app/cara.ipynb
Phil Elson f63e1d3760 Abstract the model state so that we can mutate it conveniently.
This rather large change adds a layer between the underlying (immutable) model and the application.
In doing so we can avoid the use of a global state (useful for the purposes of configuring multiple models in the same application later on) and it also unlocks the ability to implement an MVC-like separation of concerns - again, the intention is that when it comes to comparisons, we will just be able to re-use our application views.

I was hoping that ``cara.state`` could have been avoided in lieu of using traitlets, but unfortunately I found a number of limitations which were prohibitive for its use here.
Foremost of which was the lack of first-class dataclass support and the difficulty in needing either to use instances of the model (immutable) or duplicate the model and its structure in a mutable form and use the ``traitlets.Instance`` type.
Instead I opted for doing it myself - the ``cara.state`` module would make a very good standalone project in the future.
2020-10-21 20:59:01 +02:00

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"<p style=\"color: red; font-weight: bold; font-size: xx-large; text-align: center;\" align=\"center\">\n",
" 'CARA' (COVID Airborne Risk Assessment)\n",
"</p>\n",
"\n",
"<p style=\"color: blue; font-weight: bold; font-size: x-large; text-align: center;\" align=\"center\">\n",
"Airborne Transmission of SARS-CoV-2\n",
"</p>"
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"app = cara.apps.ExpertApplication()\n",
"app.widget"
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