trait Bar { fn bar_method(&self) { println!("this is bar"); } } trait Foo: Bar { fn foo_method(&self) { println!("this is foo"); } } impl Bar for u8 {} impl Foo for u8 {} fn main() { let x: u8 = 35; let foo: &dyn Foo = &x; // cast &Foo to &Bar let ba…

[image] dodomorandi: that is not a dynamic_cast in C++, but a static_cast Thanks! Glad to know this compiler explorer! Every time I have to use -masm=intel -S to view asm. This is a nice interface! Actually, as I discovered, Foo is not a Bar and I update the question. I make some modifica…

Why can't I do `dynamic_cast` in Rust as I do in C++?

help

dodomorandi May 17, 2020, 8:31pm 4

Just a small note: that is not a dynamic_cast in C++, but a static_cast. Here the C++ version of your example.

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Why can't I do `dynamic_cast` in Rust as I do in C++?

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