rust-clippy/tests/ui/methods.stderr

error: defining a method called `add` on this type; consider implementing the `std::ops::Add` trait or choosing a less ambiguous name
  --> $DIR/methods.rs:38:5
   |
LL | /     pub fn add(self, other: T) -> T {
LL | |         self
LL | |     }
   | |_____^
   |
   = note: `-D clippy::should-implement-trait` implied by `-D warnings`

error: methods called `new` usually return `Self`
  --> $DIR/methods.rs:154:5
   |
LL | /     fn new() -> i32 {
LL | |         0
LL | |     }
   | |_____^
   |
   = note: `-D clippy::new-ret-no-self` implied by `-D warnings`

error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
  --> $DIR/methods.rs:176:13
   |
LL |       let _ = opt.map(|x| x + 1)
   |  _____________^
LL | |                 // Should lint even though this call is on a separate line.
LL | |                .unwrap_or(0);
   | |____________________________^
   |
   = note: `-D clippy::option-map-unwrap-or` implied by `-D warnings`
   = note: replace `map(|x| x + 1).unwrap_or(0)` with `map_or(0, |x| x + 1)`

error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
  --> $DIR/methods.rs:180:13
   |
LL |       let _ = opt.map(|x| {
   |  _____________^
LL | |                         x + 1
LL | |                     }
LL | |               ).unwrap_or(0);
   | |____________________________^

error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
  --> $DIR/methods.rs:184:13
   |
LL |       let _ = opt.map(|x| x + 1)
   |  _____________^
LL | |                .unwrap_or({
LL | |                     0
LL | |                 });
   | |__________________^

error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
  --> $DIR/methods.rs:189:13
   |
LL |     let _ = opt.map(|x| Some(x + 1)).unwrap_or(None);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`

error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
  --> $DIR/methods.rs:191:13
   |
LL |       let _ = opt.map(|x| {
   |  _____________^
LL | |         Some(x + 1)
LL | |     }
LL | |     ).unwrap_or(None);
   | |_____________________^

error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
  --> $DIR/methods.rs:195:13
   |
LL |       let _ = opt
   |  _____________^
LL | |         .map(|x| Some(x + 1))
LL | |         .unwrap_or(None);
   | |________________________^
   |
   = note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`

error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
  --> $DIR/methods.rs:206:13
   |
LL |     let _ = Some("prefix").map(|p| format!("{}.", p)).unwrap_or(id);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: replace `map(|p| format!("{}.", p)).unwrap_or(id)` with `map_or(id, |p| format!("{}.", p))`

error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
  --> $DIR/methods.rs:210:13
   |
LL |       let _ = opt.map(|x| x + 1)
   |  _____________^
LL | |                 // Should lint even though this call is on a separate line.
LL | |                .unwrap_or_else(|| 0);
   | |____________________________________^
   |
   = note: `-D clippy::option-map-unwrap-or-else` implied by `-D warnings`
   = note: replace `map(|x| x + 1).unwrap_or_else(|| 0)` with `map_or_else(|| 0, |x| x + 1)`

error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
  --> $DIR/methods.rs:214:13
   |
LL |       let _ = opt.map(|x| {
   |  _____________^
LL | |                         x + 1
LL | |                     }
LL | |               ).unwrap_or_else(|| 0);
   | |____________________________________^

error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
  --> $DIR/methods.rs:218:13
   |
LL |       let _ = opt.map(|x| x + 1)
   |  _____________^
LL | |                .unwrap_or_else(||
LL | |                     0
LL | |                 );
   | |_________________^

error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
  --> $DIR/methods.rs:248:13
   |
LL |     let _ = v.iter().filter(|&x| *x < 0).next();
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::filter-next` implied by `-D warnings`
   = note: replace `filter(|&x| *x < 0).next()` with `find(|&x| *x < 0)`

error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
  --> $DIR/methods.rs:251:13
   |
LL |       let _ = v.iter().filter(|&x| {
   |  _____________^
LL | |                                 *x < 0
LL | |                             }
LL | |                    ).next();
   | |___________________________^

error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:268:22
   |
LL |     let _ = v.iter().find(|&x| *x < 0).is_some();
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `any(|x| *x < 0)`
   |
   = note: `-D clippy::search-is-some` implied by `-D warnings`

error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:269:20
   |
LL |     let _ = (0..1).find(|x| **y == *x).is_some(); // one dereference less
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `any(|x| **y == x)`

error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:270:20
   |
LL |     let _ = (0..1).find(|x| *x == 0).is_some();
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `any(|x| x == 0)`

error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:271:22
   |
LL |     let _ = v.iter().find(|x| **x == 0).is_some();
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `any(|x| *x == 0)`

error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:274:13
   |
LL |       let _ = v.iter().find(|&x| {
   |  _____________^
LL | |                               *x < 0
LL | |                           }
LL | |                    ).is_some();
   | |______________________________^

error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:280:22
   |
LL |     let _ = v.iter().position(|&x| x < 0).is_some();
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `any(|&x| x < 0)`

error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:283:13
   |
LL |       let _ = v.iter().position(|&x| {
   |  _____________^
LL | |                                   x < 0
LL | |                               }
LL | |                    ).is_some();
   | |______________________________^

error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:289:22
   |
LL |     let _ = v.iter().rposition(|&x| x < 0).is_some();
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `any(|&x| x < 0)`

error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
  --> $DIR/methods.rs:292:13
   |
LL |       let _ = v.iter().rposition(|&x| {
   |  _____________^
LL | |                                    x < 0
LL | |                                }
LL | |                    ).is_some();
   | |______________________________^

error: aborting due to 23 previous errors