| use std::any::Any; | |
| fn main() | |
| { | |
| fn h(x:i32) -> i32 {3*x} | |
| let mut vfnfer:Vec<Box<dyn Any>> = vec![]; | |
| vfnfer.push(Box::new(h)); | |
| println!("{:?}",(vfnfer[0] as dyn Fn)(3)); | |
| //~^ ERROR the precise format of `Fn`-family traits' | |
| //~| ERROR missing generics for trait `Fn` | |
| } |