Hello all,
I'm new here and discovering Nim. It looks like my dream language, so I'm
obligated to look it up more. I also discovered that it does frontend
JavaScript programming, and this is quite awesome. Because of this, I wondered
if there is a web framework offering reactive programming like
[Svelte](https://svelte.dev/) does.
Svelte is a web framework that took a different approach to all the Virtual DOM
libraries that were around to make a radically more efficient approach. Instead
of recomputing a virtual DOM on each operation, and then diffing it against the
physical DOM, they change the DOM in place. And it's so much more efficient
because Svelte is not a javascript library, but a javascript specific dialect
compiler. Svelte knows at compile-time what value changed exactly in which part
of the DOM, and is able to just change the single value that changed at the
right place. It also offers reactive programming where it recomputes
automatically some values when the value they depend on just changed.
I wondered if it was possible to do something like this using Nim
meta-programming features.
Doing it the svelte way would require to :
* keep track of a list of variables involved in DOM construction, or with
reactive values
* keep track of all the places in the code where those values are changed
* be able to run some code when those variables are changing :
* recompute reactive variables that depends on the variable just changed
* update DOM where the variable impacts it
And that's about it, but does Nim allows to hook into this at compile time? We
could also imagine a less automatic way to handle things with specific syntax.
Is that inspiring?
