Allow using numeric types directly

examples/tutorial/src/main.rs

@@ -70,6 +70,12 @@ fn state(model: &Model) -> View!(Model, '_) {
             // number, it is easier and more efficient to use [`display`].
             display(model.count),
         )),
+        el::p((
+            "Also count: ",
+            // In fact, if the value is a standard number type, then we can just
+            // use it directly.
+            model.count,
+        )),
         el::p((
             "Message: ",
             // Previously, we only genereted static strings, which can be used
@@ -131,7 +137,7 @@ fn local_state() -> View!(Model) {
             /// other component in our application), we can no longer call it
             /// directly here.
             fn display_counter(count: usize) -> View!(Model) {
-                el::p(("Local count: ", display(count)))
+                el::p(("Local count: ", count))
             }
 
             cx.build((

ravel-web/src/text.rs

@@ -74,6 +74,48 @@ impl Builder<Web> for &'static str {
     }
 }
 
+macro_rules! make_builder_web_to_string {
+    ($t:ty) => {
+        impl Builder<Web> for $t {
+            type State = TextState<Self>;
+
+            fn build(self, cx: BuildCx) -> Self::State {
+                let data = self.to_string();
+
+                let node = web_sys::Text::new_with_data(&data).unwrap_throw();
+                cx.position.insert(&node);
+
+                TextState { node, value: self }
+            }
+
+            fn rebuild(self, _: RebuildCx, state: &mut Self::State) {
+                if self == state.value {
+                    return;
+                }
+
+                state.node.set_data(&self.to_string());
+                state.value = self.clone();
+            }
+        }
+    };
+}
+
+make_builder_web_to_string!(char);
+make_builder_web_to_string!(f32);
+make_builder_web_to_string!(f64);
+make_builder_web_to_string!(i128);
+make_builder_web_to_string!(i16);
+make_builder_web_to_string!(i32);
+make_builder_web_to_string!(i64);
+make_builder_web_to_string!(i8);
+make_builder_web_to_string!(isize);
+make_builder_web_to_string!(u128);
+make_builder_web_to_string!(u16);
+make_builder_web_to_string!(u32);
+make_builder_web_to_string!(u64);
+make_builder_web_to_string!(u8);
+make_builder_web_to_string!(usize);
+
 /// Displays a value, updating when not equal to the previous value.
 pub struct Display<T: ToString + PartialEq + Clone> {
     value: T,