Hi all,
I'm trying to use the matches! macro to test an enum arm:
enum CallbackType {
Script(Option<String>),
Tcp(Option<String>),
Domain(Option<String>),
}
fn main() {
let a = CallbackType::Script(Some(String::from("foo")));
let a_s = String::from("foo");
assert!(matches!(a, CallbackType::Script(Some(foo))));
}
but it seems the compiler doesn't care about the variable:
warning: unused variable: `foo`
--> src/main.rs:9:51
|
9 | assert!(matches!(a, CallbackType::Script(Some(foo))));
| ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
How can I test the enum matches the right leg and it's value is matching the value inside the enum ?
Thanks a lot for your help.