rust/tests/ui/lint/use-redundant/use-redundant-prelude-rust-2021.rs

//@ check-pass
//@ edition:2021
#![warn(redundant_imports)]

use std::convert::TryFrom;//~ WARNING the item `TryFrom` is imported redundantly
use std::convert::TryInto;//~ WARNING the item `TryInto` is imported redundantly

fn main() {
    let _e: Result<i32, _> = 8u8.try_into();
    let _f: Result<i32, _> = i32::try_from(8u8);
}
By tracking import use types to check whether it is scope uses or the other situations like module-relative uses, we can do more accurate redundant import checking. fixes #117448 For example unnecessary imports in std::prelude that can be eliminated: ```rust use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly use std::option::Option::None; //~ WARNING the item `None` is imported redundantly ``` 2023-11-10 10:11:24 +08:00			`//@ check-pass`
			`//@ edition:2021`
Introduce REDUNDANT_IMPORTS lint 2024-04-11 14:10:34 -04:00			`#![warn(redundant_imports)]`
By tracking import use types to check whether it is scope uses or the other situations like module-relative uses, we can do more accurate redundant import checking. fixes #117448 For example unnecessary imports in std::prelude that can be eliminated: ```rust use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly use std::option::Option::None; //~ WARNING the item `None` is imported redundantly ``` 2023-11-10 10:11:24 +08:00
Introduce REDUNDANT_IMPORTS lint 2024-04-11 14:10:34 -04:00			use std::convert::TryFrom;//~ WARNING the item `TryFrom` is imported redundantly
			use std::convert::TryInto;//~ WARNING the item `TryInto` is imported redundantly
By tracking import use types to check whether it is scope uses or the other situations like module-relative uses, we can do more accurate redundant import checking. fixes #117448 For example unnecessary imports in std::prelude that can be eliminated: ```rust use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly use std::option::Option::None; //~ WARNING the item `None` is imported redundantly ``` 2023-11-10 10:11:24 +08:00
			`fn main() {`
			`let _e: Result<i32, _> = 8u8.try_into();`
			`let _f: Result<i32, _> = i32::try_from(8u8);`
			`}`