73 lines
1.7 KiB
Rust
Executable file
73 lines
1.7 KiB
Rust
Executable file
#![feature(plugin)]
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#![plugin(clippy)]
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#![deny(clippy)]
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#![allow(unused)]
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fn single_match(){
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let x = Some(1u8);
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match x { //~ ERROR you seem to be trying to use match
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//~^ HELP try
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Some(y) => {
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println!("{:?}", y);
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}
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_ => ()
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}
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// Not linted
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match x {
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Some(y) => println!("{:?}", y),
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None => ()
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}
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let z = (1u8,1u8);
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match z { //~ ERROR you seem to be trying to use match
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//~^ HELP try
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(2...3, 7...9) => println!("{:?}", z),
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_ => {}
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}
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// Not linted (pattern guards used)
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match x {
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Some(y) if y == 0 => println!("{:?}", y),
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_ => ()
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}
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// Not linted (content in the else)
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match z {
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(2...3, 7...9) => println!("{:?}", z),
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_ => println!("nope"),
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}
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}
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fn ref_pats() {
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{
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let v = &Some(0);
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match v { //~ERROR instead of prefixing all patterns with `&`
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&Some(v) => println!("{:?}", v),
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&None => println!("none"),
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}
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match v { // this doesn't trigger, we have a different pattern
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&Some(v) => println!("some"),
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other => println!("other"),
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}
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}
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let tup =& (1, 2);
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match tup { //~ERROR instead of prefixing all patterns with `&`
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&(v, 1) => println!("{}", v),
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_ => println!("none"),
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}
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// special case: using & both in expr and pats
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let w = Some(0);
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match &w { //~ERROR you don't need to add `&` to both
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&Some(v) => println!("{:?}", v),
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&None => println!("none"),
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}
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// false positive: only wildcard pattern
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let w = Some(0);
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match w {
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_ => println!("none"),
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}
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}
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fn main() {
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}
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