Re:Unanswered user makes question their MS thesis and answer...
by drakmaniso on Monday January 04, 2021 @04:04AM
(#25629055)
In order to know "what changed", you need at the very minimum to maintain a meta-state about your application state.
In most retained-mode GUIs, this meta-state is often a copy of a significant portion of your application state, but with a very different structure. To maintain the integrity of both copies, you then need a layer of events and/or listeners on top of that, with a complex and dynamic control flow.
Retained mode optimizes for display throughput, which matters a few decades ago. Immediate mode is better for latency and consistency, which are much more important now.
In most retained-mode GUIs, this meta-state is often a copy of a significant portion of your application state, but with a very different structure. To maintain the integrity of both copies, you then need a layer of events and/or listeners on top of that, with a complex and dynamic control flow.
Retained mode optimizes for display throughput, which matters a few decades ago. Immediate mode is better for latency and consistency, which are much more important now.