52 lines
1.1 KiB
Rust
52 lines
1.1 KiB
Rust
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#![allow(clippy::redundant_clone)]
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#![feature(custom_inner_attributes)]
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#![clippy::msrv = "1.0.0"]
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use std::ops::Deref;
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fn option_as_ref_deref() {
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let mut opt = Some(String::from("123"));
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let _ = opt.as_ref().map(String::as_str);
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let _ = opt.as_ref().map(|x| x.as_str());
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let _ = opt.as_mut().map(String::as_mut_str);
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let _ = opt.as_mut().map(|x| x.as_mut_str());
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}
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fn match_like_matches() {
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let _y = match Some(5) {
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Some(0) => true,
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_ => false,
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};
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}
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fn match_same_arms() {
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match (1, 2, 3) {
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(1, .., 3) => 42,
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(.., 3) => 42, //~ ERROR match arms have same body
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_ => 0,
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};
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}
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fn match_same_arms2() {
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let _ = match Some(42) {
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Some(_) => 24,
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None => 24, //~ ERROR match arms have same body
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};
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}
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fn manual_strip_msrv() {
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let s = "hello, world!";
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if s.starts_with("hello, ") {
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assert_eq!(s["hello, ".len()..].to_uppercase(), "WORLD!");
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}
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}
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fn main() {
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option_as_ref_deref();
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match_like_matches();
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match_same_arms();
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match_same_arms2();
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manual_strip_msrv();
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}
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