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