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

24 lines
766 B
Rust

//@ check-pass
#![warn(unused_imports)]
use std::option::Option::Some;
//FIXME(unused_imports): ~^ WARNING the item `Some` is imported redundantly
use std::option::Option::None;
//FIXME(unused_imports): ~ WARNING the item `None` is imported redundantly
use std::result::Result::Ok;
//FIXME(unused_imports): ~^ WARNING the item `Ok` is imported redundantly
use std::result::Result::Err;
//FIXME(unused_imports): ~^ WARNING the item `Err` is imported redundantly
use std::convert::{TryFrom, TryInto};
fn main() {
let _a: Option<i32> = Some(1);
let _b: Option<i32> = None;
let _c: Result<i32, String> = Ok(1);
let _d: Result<i32, &str> = Err("error");
let _e: Result<i32, _> = 8u8.try_into();
let _f: Result<i32, _> = i32::try_from(8u8);
}