Mirrors/rust-clippy
2
0
Fork 0
mirror of https://github.com/rust-lang/rust-clippy synced 2024-11-13 08:27:14 +00:00
Code Issues Projects Releases Packages Wiki Activity
rust-clippy/tests/ui/methods.stderr
Philipp Hansch 38d4ac7cea
Remove all copyright license headers 
Discussion previously happened in https://github.com/rust-lang/rust/pull/43498
2019-01-08 21:46:39 +01:00

347 lines
13 KiB
Text
Raw Blame History

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:35:5
|
LL | pub fn add(self, other: T) -> T { self }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::should-implement-trait` implied by `-D warnings`
error: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
--> $DIR/methods.rs:46:17
|
LL | fn into_u16(&self) -> u16 { 0 }
| ^^^^^
|
= note: `-D clippy::wrong-self-convention` implied by `-D warnings`
error: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
--> $DIR/methods.rs:48:21
|
LL | fn to_something(self) -> u32 { 0 }
| ^^^^
error: methods called `new` usually take no self; consider choosing a less ambiguous name
--> $DIR/methods.rs:50:12
|
LL | fn new(self) -> Self { unimplemented!(); }
| ^^^^
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:111:13
|
LL | let _ = opt.map(|x| x + 1)
| _____________^
LL | |
LL | | .unwrap_or(0); // should lint even though this call is on a separate line
| |____________________________^
|
= 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:115:13
|
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:119:13
|
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:124:13
|
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:126:13
|
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:130:13
|
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_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
--> $DIR/methods.rs:138:13
|
LL | let _ = opt.map(|x| x + 1)
| _____________^
LL | |
LL | | .unwrap_or_else(|| 0); // should lint even though this call is on a separate line
| |____________________________________^
|
= 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:142:13
|
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:146:13
|
LL | let _ = opt.map(|x| x + 1)
| _____________^
LL | | .unwrap_or_else(||
LL | | 0
LL | | );
| |_________________^
error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:155:13
|
LL | let _ = opt.map_or(None, |x| Some(x + 1));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `opt.and_then(|x| Some(x + 1))`
|
= note: `-D clippy::option-map-or-none` implied by `-D warnings`
error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:157:13
|
LL | let _ = opt.map_or(None, |x| {
| _____________^
LL | | Some(x + 1)
LL | | }
LL | | );
| |_________________^
help: try using and_then instead
|
LL | let _ = opt.and_then(|x| {
LL | Some(x + 1)
LL | });
|
error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
--> $DIR/methods.rs:182:13
|
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:185:13
|
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:200:13
|
LL | let _ = v.iter().find(|&x| *x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::search-is-some` implied by `-D warnings`
= note: replace `find(|&x| *x < 0).is_some()` with `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:203:13
|
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:209:13
|
LL | let _ = v.iter().position(|&x| x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: replace `position(|&x| x < 0).is_some()` with `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:212:13
|
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:218:13
|
LL | let _ = v.iter().rposition(|&x| x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: replace `rposition(|&x| x < 0).is_some()` with `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:221:13
|
LL | let _ = v.iter().rposition(|&x| {
| _____________^
LL | | x < 0
LL | | }
LL | | ).is_some();
| |______________________________^
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:256:22
|
LL | with_constructor.unwrap_or(make());
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(make)`
|
= note: `-D clippy::or-fun-call` implied by `-D warnings`
error: use of `unwrap_or` followed by a call to `new`
--> $DIR/methods.rs:259:5
|
LL | with_new.unwrap_or(Vec::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_new.unwrap_or_default()`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:262:21
|
LL | with_const_args.unwrap_or(Vec::with_capacity(12));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Vec::with_capacity(12))`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:265:14
|
LL | with_err.unwrap_or(make());
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| make())`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:268:19
|
LL | with_err_args.unwrap_or(Vec::with_capacity(12));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| Vec::with_capacity(12))`
error: use of `unwrap_or` followed by a call to `default`
--> $DIR/methods.rs:271:5
|
LL | with_default_trait.unwrap_or(Default::default());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_trait.unwrap_or_default()`
error: use of `unwrap_or` followed by a call to `default`
--> $DIR/methods.rs:274:5
|
LL | with_default_type.unwrap_or(u64::default());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_type.unwrap_or_default()`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:277:14
|
LL | with_vec.unwrap_or(vec![]);
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| vec![])`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:282:21
|
LL | without_default.unwrap_or(Foo::new());
| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(Foo::new)`
error: use of `or_insert` followed by a function call
--> $DIR/methods.rs:285:19
|
LL | map.entry(42).or_insert(String::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
error: use of `or_insert` followed by a function call
--> $DIR/methods.rs:288:21
|
LL | btree.entry(42).or_insert(String::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:291:21
|
LL | let _ = stringy.unwrap_or("".to_owned());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "".to_owned())`
error: called `.iter().nth()` on a Vec. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:302:23
|
LL | let bad_vec = some_vec.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::iter-nth` implied by `-D warnings`
error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:303:26
|
LL | let bad_slice = &some_vec[..].iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:304:31
|
LL | let bad_boxed_slice = boxed_slice.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter().nth()` on a VecDeque. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:305:29
|
LL | let bad_vec_deque = some_vec_deque.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a Vec. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:310:23
|
LL | let bad_vec = some_vec.iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a slice. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:313:26
|
LL | let bad_slice = &some_vec[..].iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a VecDeque. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:316:29
|
LL | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: used unwrap() on an Option value. If you don't want to handle the None case gracefully, consider using expect() to provide a better panic message
--> $DIR/methods.rs:328:13
|
LL | let _ = opt.unwrap();
| ^^^^^^^^^^^^
|
= note: `-D clippy::option-unwrap-used` implied by `-D warnings`
error: aborting due to 43 previous errors
Reference in a new issue View git blame Copy permalink