> The pattern is very obvious?
It's not
> It's not 4 dsls in one, anymore than jsx
I "like" that when discussing these things everyone completely ignores everything, and focuses on one specific thing.
So, again. The claim was that Vue templates is "HTML + Javascript"
1. As v-for clearly shows it's not even close to Javascript, as there are no Javascript constructs that correspond to this
2. As everything else, not just v-for shows, it's neither HTML (so many custom attributes with extensions and shorcuts etc.) nor Javascript.
The pattern is very obvious?
If array: (value, index)=>void
If object: (value, key, index)=>void
If it's an array, it's the call signature for the args of the forEach method, i.e. (value, index)=>void, but can be assigned a function that's just (value)=>void if index is unneeded. If it's an object, it's an extension of the same logic with (value, key, index).
It's not 4 dsls in one, anymore than jsx is a 1000 markups in one.