some potentially nice trait stuff

core/src/lib.rs

@@ -2,10 +2,8 @@
 #![feature(const_ops)]
 #![feature(const_trait_impl)]
 #![feature(const_convert)]
-#![feature(map_try_insert)]
 #![feature(unboxed_closures)]
 #![feature(fn_traits)]
-#![feature(const_cmp)]
 #![feature(const_destruct)]
 #![feature(portable_simd)]
 #![feature(associated_type_defaults)]

core/src/widget/like.rs

@@ -34,7 +34,7 @@ pub trait HasRoot {
 
 pub trait WidgetArrLike<Rsc, const LEN: usize, Tag> {
     #[track_caller]
-    fn add(self, state: &mut Rsc) -> WidgetArr<LEN>;
+    fn add(self, rsc: &mut Rsc) -> WidgetArr<LEN>;
 }
 
 impl<Rsc, const LEN: usize> WidgetArrLike<Rsc, LEN, ArrTag> for WidgetArr<LEN> {
@@ -58,6 +58,13 @@ macro_rules! impl_widget_arr {
                 )
             }
         }
+        impl<Rsc: UiRsc, $($W: WidgetLike<Rsc, $Tag>,$Tag,)*> IntoWidgetVec<Rsc, ($($Tag,)*), ArrTag> for ($($W,)*) {
+            fn into_vec(self, rsc: &mut Rsc) -> Vec<StrongWidget> {
+                #[allow(non_snake_case)]
+                let ($($W,)*) = self;
+                vec![$($W.add(rsc).upgrade(rsc),)*]
+            }
+        }
     };
 }
 

core/src/widget/mod.rs

@@ -1,4 +1,4 @@
-use crate::{Axis, AxisT, Len, Painter, SizeCtx};
+use crate::{Axis, AxisT, Len, Painter, SizeCtx, UiRsc};
 use std::any::Any;
 
 mod data;
@@ -85,3 +85,16 @@ impl<State, F: FnOnce(&mut State) -> Option<StrongWidget>> WidgetOption<State> f
         self(state)
     }
 }
+
+pub trait IntoWidgetVec<Rsc, WTag, GTag> {
+    fn into_vec(self, rsc: &mut Rsc) -> Vec<StrongWidget>;
+}
+
+impl<Rsc: UiRsc, I: IntoIterator, Tag> IntoWidgetVec<Rsc, Tag, IterTag> for I
+where
+    I::Item: WidgetLike<Rsc, Tag>,
+{
+    fn into_vec(self, rsc: &mut Rsc) -> Vec<StrongWidget> {
+        self.into_iter().map(|w| w.add_strong(rsc).any()).collect()
+    }
+}

core/src/widget/tag.rs

@@ -62,3 +62,4 @@ impl<Rsc: UiRsc, V: WidgetView> WidgetLike<Rsc, ViewTag> for V {
 }
 
 pub struct ArrTag;
+pub struct IterTag;