rust-clippy/tests/ui/len_zero.stderr

error: item `PubOne` has a public `len` method but no corresponding `is_empty` method
  --> $DIR/len_zero.rs:15:1
   |
15 | / impl PubOne {
16 | |     pub fn len(self: &Self) -> isize {
17 | |         1
18 | |     }
19 | | }
   | |_^
   |
   = note: `-D clippy::len-without-is-empty` implied by `-D warnings`

error: trait `PubTraitsToo` has a `len` method but no (possibly inherited) `is_empty` method
  --> $DIR/len_zero.rs:64:1
   |
64 | / pub trait PubTraitsToo {
65 | |     fn len(self: &Self) -> isize;
66 | | }
   | |_^

error: item `HasIsEmpty` has a public `len` method but a private `is_empty` method
   --> $DIR/len_zero.rs:98:1
    |
98  | / impl HasIsEmpty {
99  | |     pub fn len(self: &Self) -> isize {
100 | |         1
101 | |     }
...   |
105 | |     }
106 | | }
    | |_^

error: item `HasWrongIsEmpty` has a public `len` method but no corresponding `is_empty` method
   --> $DIR/len_zero.rs:127:1
    |
127 | / impl HasWrongIsEmpty {
128 | |     pub fn len(self: &Self) -> isize {
129 | |         1
130 | |     }
...   |
134 | |     }
135 | | }
    | |_^

error: length comparison to zero
   --> $DIR/len_zero.rs:148:8
    |
148 |     if x.len() == 0 {
    |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `x.is_empty()`
    |
    = note: `-D clippy::len-zero` implied by `-D warnings`

error: length comparison to zero
   --> $DIR/len_zero.rs:152:8
    |
152 |     if "".len() == 0 {}
    |        ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `"".is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:167:8
    |
167 |     if has_is_empty.len() == 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:170:8
    |
170 |     if has_is_empty.len() != 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:173:8
    |
173 |     if has_is_empty.len() > 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:176:8
    |
176 |     if has_is_empty.len() < 1 {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:179:8
    |
179 |     if has_is_empty.len() >= 1 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:190:8
    |
190 |     if 0 == has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:193:8
    |
193 |     if 0 != has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:196:8
    |
196 |     if 0 < has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:199:8
    |
199 |     if 1 <= has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:202:8
    |
202 |     if 1 > has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:216:8
    |
216 |     if with_is_empty.len() == 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `with_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:229:8
    |
229 |     if b.len() != 0 {}
    |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!b.is_empty()`

error: trait `DependsOnFoo` has a `len` method but no (possibly inherited) `is_empty` method
   --> $DIR/len_zero.rs:235:1
    |
235 | / pub trait DependsOnFoo: Foo {
236 | |     fn len(&mut self) -> usize;
237 | | }
    | |_^

error: aborting due to 19 previous errors