rust-clippy/tests/ui/len_zero.stderr

error: length comparison to zero
  --> $DIR/len_zero.rs:82:8
   |
LL |     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`
   = help: to override `-D warnings` add `#[allow(clippy::len_zero)]`

error: length comparison to zero
  --> $DIR/len_zero.rs:86:8
   |
LL |     if "".len() == 0 {}
   |        ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `"".is_empty()`

error: comparison to empty slice
  --> $DIR/len_zero.rs:95:20
   |
LL |     println!("{}", *s1 == "");
   |                    ^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s1.is_empty()`
   |
   = note: `-D clippy::comparison-to-empty` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::comparison_to_empty)]`

error: comparison to empty slice
  --> $DIR/len_zero.rs:96:20
   |
LL |     println!("{}", **s2 == "");
   |                    ^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s2.is_empty()`

error: comparison to empty slice
  --> $DIR/len_zero.rs:97:20
   |
LL |     println!("{}", ***s3 == "");
   |                    ^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s3.is_empty()`

error: comparison to empty slice
  --> $DIR/len_zero.rs:98:20
   |
LL |     println!("{}", ****s4 == "");
   |                    ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s4.is_empty()`

error: comparison to empty slice
  --> $DIR/len_zero.rs:99:20
   |
LL |     println!("{}", *****s5 == "");
   |                    ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s5.is_empty()`

error: comparison to empty slice
  --> $DIR/len_zero.rs:100:20
   |
LL |     println!("{}", ******(s6) == "");
   |                    ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `(s6).is_empty()`

error: comparison to empty slice
  --> $DIR/len_zero.rs:103:20
   |
LL |     println!("{}", &**d2s == "");
   |                    ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `(**d2s).is_empty()`

error: length comparison to zero
  --> $DIR/len_zero.rs:118:8
   |
LL |     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:121:8
   |
LL |     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:124:8
   |
LL |     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:127:8
   |
LL |     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:130:8
   |
LL |     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:141:8
   |
LL |     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:144:8
   |
LL |     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:147:8
   |
LL |     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:150:8
   |
LL |     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:153:8
   |
LL |     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:167:8
   |
LL |     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:179:6
   |
LL |     (has_is_empty.len() > 0).then(|| println!("This can happen."));
   |      ^^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!has_is_empty.is_empty()`

error: length comparison to zero
  --> $DIR/len_zero.rs:180:6
   |
LL |     (has_is_empty.len() == 0).then(|| println!("Or this!"));
   |      ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `has_is_empty.is_empty()`

error: length comparison to zero
  --> $DIR/len_zero.rs:184:8
   |
LL |     if b.len() != 0 {}
   |        ^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!b.is_empty()`

error: aborting due to 23 previous errors