//! Demonstrate that borrowed data is possible as a property type //! Borrowing (rather than cloning) is very important for speed and ergonomics. //! //! It's slightly more advanced than just cloning, but well worth the investment. //! //! If you use the FC macro, we handle the lifetimes automatically, making it easy to write efficient & performant components. fn main() {} use dioxus_core::prelude::*; use std::rc::Rc; struct AppProps { items: Vec>, } #[derive(PartialEq)] struct ListItem { name: String, age: u32, } fn app(cx: Context) -> VNode { let (val, set_val) = use_state_classic(cx, || 0); cx.render(LazyNodes::new(move |_nodecx| { todo!() // builder::ElementBuilder::new(_nodecx, "div") // .iter_child({ // cx.items.iter().map(|child| { // builder::virtual_child( // _nodecx, // ChildItem, // ChildProps { // item: child.clone(), // item_handler: set_val.clone(), // }, // None, // &[], // ) // }) // }) // .iter_child([builder::ElementBuilder::new(_nodecx, "div") // .iter_child([builder::text3(_nodecx.bump(), format_args!("{}", val))]) // .finish()]) // .finish() })) } // props should derive a partialeq implementation automatically, but implement ptr compare for & fields struct ChildProps { // Pass down complex structs item: Rc, // Even pass down handlers! item_handler: Rc, } fn ChildItem<'a>(cx: Context<'a, ChildProps>) -> VNode { cx.render(LazyNodes::new(move |__cx| todo!())) } impl PartialEq for ChildProps { fn eq(&self, other: &Self) -> bool { false } } impl Properties for ChildProps { type Builder = (); fn builder() -> Self::Builder { () } unsafe fn memoize(&self, other: &Self) -> bool { self == other } }