Created
August 21, 2024 16:06
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| #![feature(try_blocks, try_trait_v2)] | |
| #![allow(dead_code)] | |
| #[derive(Debug)] | |
| struct Foo<T>(T); | |
| // Parametric types are bound during method calls | |
| trait Bar<T> { | |
| // Associated types are bound during Trait implementation | |
| type AT; | |
| fn associated_type(&self) -> Self::AT { | |
| todo!() | |
| } | |
| fn parametric_type(&self) -> T { | |
| todo!() | |
| } | |
| } | |
| impl Bar<String> for Foo<String> { | |
| type AT = bool; | |
| fn associated_type(&self) -> Self::AT { | |
| std::todo!() | |
| } | |
| fn parametric_type(&self) -> String { | |
| std::todo!() | |
| } | |
| } | |
| impl Bar<i32> for Foo<i32> { | |
| type AT = &'static str; | |
| fn associated_type(&self) -> Self::AT { | |
| std::todo!() | |
| } | |
| fn parametric_type(&self) -> i32 { | |
| std::todo!() | |
| } | |
| } | |
| fn main() { | |
| let foos = Foo(String::from("foo")); | |
| let fooi = Foo(0); | |
| let _x: bool = Bar::<String>::associated_type(&foos); | |
| let _x: &str = Bar::<i32>::associated_type(&fooi); | |
| let _x: String = Bar::<String>::parametric_type(&foos); | |
| let _x: i32 = Bar::<i32>::parametric_type(&fooi); | |
| } |
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