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trait FnRegister<A, RetVal, Args> { | |
fn register(&mut self, name: &str, f: A); | |
} | |
impl<A, RetVal, Arg1> FnRegister<A, RetVal, (Arg1,)> for Bob | |
where A: 'static + Fn(Arg1)->RetVal | |
{ | |
fn register(self, name: &str, fun: fn(Arg1)->RetVal) { | |
println!("Fn(T)->U"); | |
} | |
} | |
impl<'a, A, RetVal, Arg1> FnRegister<A, RetVal, (&'a Arg1,)> for Bob | |
where A: 'static + Fn(&Arg1)->RetVal | |
{ | |
fn register(self, name: &str, fun: fn(&Arg1)->RetVal) { | |
println!("Fn(&T)->U"); | |
} | |
} | |
struct Bob { x: u32 } | |
impl Bob { | |
fn bob_val(self) { | |
println!("bob_val"); | |
} | |
fn bob_ref(&self) { | |
println!("bob_ref"); | |
} | |
} | |
fn main() { | |
let mut bob = Bob { x: 1 }; | |
bob.register("bob_val", Bob::bob_val); | |
bob.register("bob_ref", Bob::bob_ref); | |
} | |
/* | |
error: conflicting implementations of trait `FnRegister<_, _, (&_,)>` for type `Bob`: [--explain E0119] | |
--> testme.rs:13:1 | |
13 |> impl<'a, A, RetVal, Arg1> FnRegister<A, RetVal, (&'a Arg1,)> for Bob | |
|> ^ | |
note: conflicting implementation is here: | |
--> testme.rs:5:1 | |
5 |> impl<A, RetVal, Arg1> FnRegister<A, RetVal, (Arg1,)> for Bob | |
|> ^ | |
*/ |
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