10 lines
132 B
Rust
10 lines
132 B
Rust
pub trait Trait {
|
|
fn fun(par: &str) -> &str;
|
|
}
|
|
|
|
impl Trait for str {
|
|
fn fun(par: &str) -> &str {
|
|
&par[0..1]
|
|
}
|
|
}
|