buildHtml does not capture closure variables about karax

[geotre]

This is not an issue with closure variables, I think maybe just a slight misunderstanding of how Karax works.

Here's what is happening from Karax's point of view, when you use the code in case 2:

1. It's told that whenever something changes, it should call createDom to get the latest vdom tree (you tell it this with the setRenderer call)
2. It calls createDom to get the initial vdom tree to render. createDom initializes lines as an empty seq, then returns a tree of VNodes representing the desired state of the dom. This initial tree does not include any text from lines, as it is empty
3. It renders that initial tree to the page, in doing so attaches an onclick handler to the button element. This handler is wrapped so that it includes a call to redraw()
4. You click the button, firing the onclick event handler
5. The event handler adds a string to the lines seq, then calls redraw()
6. To redraw the app, Karax calls createDom to get the latest updated version of the vdom tree
7. createDom initializes lines as an empty seq, then returns a tree of vnodes. This tree again does not include any text from lines, as it is empty
8. Karax diffs the two trees, but does not find any changes as they are the same, so nothing happens

This is not a bug in Karax, so there is no error message expected

[hamidb80]

thanks for your nice & complete explanation,

I was misunderstood,