rust-clippy/tests/ui/redundant_pattern_matching.stderr

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:15:12
   |
LL |     if let Ok(_) = &result {}
   |     -------^^^^^---------- help: try this: `if result.is_ok()`
   |
   = note: `-D clippy::redundant-pattern-matching` implied by `-D warnings`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:17:12
   |
LL |     if let Ok(_) = Ok::<i32, i32>(42) {}
   |     -------^^^^^--------------------- help: try this: `if Ok::<i32, i32>(42).is_ok()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:19:12
   |
LL |     if let Err(_) = Err::<i32, i32>(42) {}
   |     -------^^^^^^---------------------- help: try this: `if Err::<i32, i32>(42).is_err()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:21:12
   |
LL |     if let None = None::<()> {}
   |     -------^^^^------------- help: try this: `if None::<()>.is_none()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:23:12
   |
LL |     if let Some(_) = Some(42) {}
   |     -------^^^^^^^----------- help: try this: `if Some(42).is_some()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:25:12
   |
LL |     if let Some(_) = Some(42) {
   |     -------^^^^^^^----------- help: try this: `if Some(42).is_some()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:31:15
   |
LL |     while let Some(_) = Some(42) {}
   |     ----------^^^^^^^----------- help: try this: `while Some(42).is_some()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:33:15
   |
LL |     while let None = Some(42) {}
   |     ----------^^^^----------- help: try this: `while Some(42).is_none()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:35:15
   |
LL |     while let None = None::<()> {}
   |     ----------^^^^------------- help: try this: `while None::<()>.is_none()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:37:15
   |
LL |     while let Ok(_) = Ok::<i32, i32>(10) {}
   |     ----------^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_ok()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:39:15
   |
LL |     while let Err(_) = Ok::<i32, i32>(10) {}
   |     ----------^^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_err()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:42:15
   |
LL |     while let Some(_) = v.pop() {
   |     ----------^^^^^^^---------- help: try this: `while v.pop().is_some()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:58:5
   |
LL | /     match Ok::<i32, i32>(42) {
LL | |         Ok(_) => true,
LL | |         Err(_) => false,
LL | |     };
   | |_____^ help: try this: `Ok::<i32, i32>(42).is_ok()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:63:5
   |
LL | /     match Ok::<i32, i32>(42) {
LL | |         Ok(_) => false,
LL | |         Err(_) => true,
LL | |     };
   | |_____^ help: try this: `Ok::<i32, i32>(42).is_err()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:68:5
   |
LL | /     match Err::<i32, i32>(42) {
LL | |         Ok(_) => false,
LL | |         Err(_) => true,
LL | |     };
   | |_____^ help: try this: `Err::<i32, i32>(42).is_err()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:73:5
   |
LL | /     match Err::<i32, i32>(42) {
LL | |         Ok(_) => true,
LL | |         Err(_) => false,
LL | |     };
   | |_____^ help: try this: `Err::<i32, i32>(42).is_ok()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:78:5
   |
LL | /     match Some(42) {
LL | |         Some(_) => true,
LL | |         None => false,
LL | |     };
   | |_____^ help: try this: `Some(42).is_some()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:83:5
   |
LL | /     match None::<()> {
LL | |         Some(_) => false,
LL | |         None => true,
LL | |     };
   | |_____^ help: try this: `None::<()>.is_none()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:88:13
   |
LL |       let _ = match None::<()> {
   |  _____________^
LL | |         Some(_) => false,
LL | |         None => true,
LL | |     };
   | |_____^ help: try this: `None::<()>.is_none()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:93:20
   |
LL |     let _ = if let Ok(_) = Ok::<usize, ()>(4) { true } else { false };
   |             -------^^^^^--------------------- help: try this: `if Ok::<usize, ()>(4).is_ok()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:96:20
   |
LL |     let x = if let Some(_) = opt { true } else { false };
   |             -------^^^^^^^------ help: try this: `if opt.is_some()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:102:20
   |
LL |     let _ = if let Some(_) = gen_opt() {
   |             -------^^^^^^^------------ help: try this: `if gen_opt().is_some()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:104:19
   |
LL |     } else if let None = gen_opt() {
   |            -------^^^^------------ help: try this: `if gen_opt().is_none()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:106:19
   |
LL |     } else if let Ok(_) = gen_res() {
   |            -------^^^^^------------ help: try this: `if gen_res().is_ok()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:108:19
   |
LL |     } else if let Err(_) = gen_res() {
   |            -------^^^^^^------------ help: try this: `if gen_res().is_err()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:141:19
   |
LL |         while let Some(_) = r#try!(result_opt()) {}
   |         ----------^^^^^^^----------------------- help: try this: `while r#try!(result_opt()).is_some()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:142:16
   |
LL |         if let Some(_) = r#try!(result_opt()) {}
   |         -------^^^^^^^----------------------- help: try this: `if r#try!(result_opt()).is_some()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:148:12
   |
LL |     if let Some(_) = m!() {}
   |     -------^^^^^^^------- help: try this: `if m!().is_some()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:149:15
   |
LL |     while let Some(_) = m!() {}
   |     ----------^^^^^^^------- help: try this: `while m!().is_some()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:156:12
   |
LL |     if let Ok(_) = Ok::<i32, i32>(42) {}
   |     -------^^^^^--------------------- help: try this: `if Ok::<i32, i32>(42).is_ok()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:158:12
   |
LL |     if let Err(_) = Err::<i32, i32>(42) {}
   |     -------^^^^^^---------------------- help: try this: `if Err::<i32, i32>(42).is_err()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:160:12
   |
LL |     if let Some(_) = Some(42) {}
   |     -------^^^^^^^----------- help: try this: `if Some(42).is_some()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:162:12
   |
LL |     if let None = None::<()> {}
   |     -------^^^^------------- help: try this: `if None::<()>.is_none()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:164:15
   |
LL |     while let Ok(_) = Ok::<i32, i32>(10) {}
   |     ----------^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_ok()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:166:15
   |
LL |     while let Err(_) = Ok::<i32, i32>(10) {}
   |     ----------^^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_err()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:168:15
   |
LL |     while let Some(_) = Some(42) {}
   |     ----------^^^^^^^----------- help: try this: `while Some(42).is_some()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:170:15
   |
LL |     while let None = None::<()> {}
   |     ----------^^^^------------- help: try this: `while None::<()>.is_none()`

error: redundant pattern matching, consider using `is_ok()`
  --> $DIR/redundant_pattern_matching.rs:172:5
   |
LL | /     match Ok::<i32, i32>(42) {
LL | |         Ok(_) => true,
LL | |         Err(_) => false,
LL | |     };
   | |_____^ help: try this: `Ok::<i32, i32>(42).is_ok()`

error: redundant pattern matching, consider using `is_err()`
  --> $DIR/redundant_pattern_matching.rs:177:5
   |
LL | /     match Err::<i32, i32>(42) {
LL | |         Ok(_) => false,
LL | |         Err(_) => true,
LL | |     };
   | |_____^ help: try this: `Err::<i32, i32>(42).is_err()`

error: redundant pattern matching, consider using `is_some()`
  --> $DIR/redundant_pattern_matching.rs:182:5
   |
LL | /     match Some(42) {
LL | |         Some(_) => true,
LL | |         None => false,
LL | |     };
   | |_____^ help: try this: `Some(42).is_some()`

error: redundant pattern matching, consider using `is_none()`
  --> $DIR/redundant_pattern_matching.rs:187:5
   |
LL | /     match None::<()> {
LL | |         Some(_) => false,
LL | |         None => true,
LL | |     };
   | |_____^ help: try this: `None::<()>.is_none()`

error: aborting due to 41 previous errors