> The recent Component based model of composing UI - the runtime mutations of the elements are expressed as state updates inside the UI declarations itself(and

> The recent Component based model of composing UI - the runtime mutations of the elements are expressed as state updates inside the UI declarations itself(and declarations are usually done with a turing complete language) is pretty much how Qt does it with QML (released in 2011), except that instead of requiring explicit function calls, the variables are themselves reactive so that: Button { text: "foo" + counter.value } updates automatically whenever "value" changes. See e.g. https://www.qt.io/product/qt6/qml-book https://www.qt.io/product/qt6/qml-book (or a small TodoMVC example I did at somepoint to see some actual code: https://github.com/jcelerier/TodoMVC-QML/blob/master/Main.qml https://github.com/jcelerier/TodoMVC-QML/blob/master/Main.qm... )