Add must_use to Shape
@@ -6,6 +6,7 @@ use emath::*;
/// A paint primitive such as a circle or a piece of text.
/// Coordinates are all screen space points (not physical pixels).
+#[must_use = "Add a Shape to a Painter"]
#[derive(Clone, Debug)]
pub enum Shape {
/// Paint nothing. This can be useful as a placeholder.
