mirror of
https://github.com/rust-lang/rust-clippy
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347 lines
13 KiB
Text
347 lines
13 KiB
Text
error: defining a method called `add` on this type; consider implementing the `std::ops::Add` trait or choosing a less ambiguous name
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--> $DIR/methods.rs:39:5
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LL | pub fn add(self, other: T) -> T { self }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::should-implement-trait` implied by `-D warnings`
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error: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
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--> $DIR/methods.rs:50:17
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LL | fn into_u16(&self) -> u16 { 0 }
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| ^^^^^
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= note: `-D clippy::wrong-self-convention` implied by `-D warnings`
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error: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
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--> $DIR/methods.rs:52:21
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LL | fn to_something(self) -> u32 { 0 }
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| ^^^^
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error: methods called `new` usually take no self; consider choosing a less ambiguous name
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--> $DIR/methods.rs:54:12
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LL | fn new(self) -> Self { unimplemented!(); }
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| ^^^^
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error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
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--> $DIR/methods.rs:115:13
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LL | let _ = opt.map(|x| x + 1)
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| _____________^
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LL | |
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LL | | .unwrap_or(0); // should lint even though this call is on a separate line
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| |____________________________^
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= note: `-D clippy::option-map-unwrap-or` implied by `-D warnings`
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= note: replace `map(|x| x + 1).unwrap_or(0)` with `map_or(0, |x| x + 1)`
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error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
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--> $DIR/methods.rs:119:13
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LL | let _ = opt.map(|x| {
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| _____________^
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LL | | x + 1
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LL | | }
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LL | | ).unwrap_or(0);
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| |____________________________^
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error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
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--> $DIR/methods.rs:123:13
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LL | let _ = opt.map(|x| x + 1)
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| _____________^
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LL | | .unwrap_or({
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LL | | 0
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LL | | });
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| |__________________^
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error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:128:13
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LL | let _ = opt.map(|x| Some(x + 1)).unwrap_or(None);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
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error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:130:13
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LL | let _ = opt.map(|x| {
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| _____________^
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LL | | Some(x + 1)
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LL | | }
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LL | | ).unwrap_or(None);
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| |_____________________^
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error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:134:13
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LL | let _ = opt
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| _____________^
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LL | | .map(|x| Some(x + 1))
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LL | | .unwrap_or(None);
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| |________________________^
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= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
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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
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--> $DIR/methods.rs:142:13
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LL | let _ = opt.map(|x| x + 1)
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| _____________^
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LL | |
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LL | | .unwrap_or_else(|| 0); // should lint even though this call is on a separate line
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| |____________________________________^
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= note: `-D clippy::option-map-unwrap-or-else` implied by `-D warnings`
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= note: replace `map(|x| x + 1).unwrap_or_else(|| 0)` with `map_or_else(|| 0, |x| x + 1)`
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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
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--> $DIR/methods.rs:146:13
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LL | let _ = opt.map(|x| {
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| _____________^
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LL | | x + 1
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LL | | }
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LL | | ).unwrap_or_else(|| 0);
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| |____________________________________^
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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
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--> $DIR/methods.rs:150:13
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LL | let _ = opt.map(|x| x + 1)
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| _____________^
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LL | | .unwrap_or_else(||
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LL | | 0
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LL | | );
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| |_________________^
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error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:159:13
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LL | let _ = opt.map_or(None, |x| Some(x + 1));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `opt.and_then(|x| Some(x + 1))`
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= note: `-D clippy::option-map-or-none` implied by `-D warnings`
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error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:161:13
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LL | let _ = opt.map_or(None, |x| {
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| _____________^
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LL | | Some(x + 1)
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LL | | }
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LL | | );
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| |_________________^
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help: try using and_then instead
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LL | let _ = opt.and_then(|x| {
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LL | Some(x + 1)
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LL | });
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error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
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--> $DIR/methods.rs:186:13
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LL | let _ = v.iter().filter(|&x| *x < 0).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::filter-next` implied by `-D warnings`
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= note: replace `filter(|&x| *x < 0).next()` with `find(|&x| *x < 0)`
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error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
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--> $DIR/methods.rs:189:13
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LL | let _ = v.iter().filter(|&x| {
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| _____________^
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LL | | *x < 0
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LL | | }
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LL | | ).next();
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| |___________________________^
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error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:204:13
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LL | let _ = v.iter().find(|&x| *x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::search-is-some` implied by `-D warnings`
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= note: replace `find(|&x| *x < 0).is_some()` with `any(|&x| *x < 0)`
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error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:207:13
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LL | let _ = v.iter().find(|&x| {
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| _____________^
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LL | | *x < 0
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LL | | }
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LL | | ).is_some();
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| |______________________________^
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error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:213:13
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LL | let _ = v.iter().position(|&x| x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: replace `position(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
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error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:216:13
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LL | let _ = v.iter().position(|&x| {
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| _____________^
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LL | | x < 0
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LL | | }
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LL | | ).is_some();
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| |______________________________^
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error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:222:13
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LL | let _ = v.iter().rposition(|&x| x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: replace `rposition(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
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error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:225:13
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LL | let _ = v.iter().rposition(|&x| {
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| _____________^
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LL | | x < 0
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LL | | }
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LL | | ).is_some();
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| |______________________________^
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:260:22
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LL | with_constructor.unwrap_or(make());
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(make)`
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= note: `-D clippy::or-fun-call` implied by `-D warnings`
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error: use of `unwrap_or` followed by a call to `new`
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--> $DIR/methods.rs:263:5
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LL | with_new.unwrap_or(Vec::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_new.unwrap_or_default()`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:266:21
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LL | with_const_args.unwrap_or(Vec::with_capacity(12));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Vec::with_capacity(12))`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:269:14
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LL | with_err.unwrap_or(make());
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| make())`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:272:19
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LL | with_err_args.unwrap_or(Vec::with_capacity(12));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| Vec::with_capacity(12))`
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error: use of `unwrap_or` followed by a call to `default`
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--> $DIR/methods.rs:275:5
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LL | with_default_trait.unwrap_or(Default::default());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_trait.unwrap_or_default()`
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error: use of `unwrap_or` followed by a call to `default`
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--> $DIR/methods.rs:278:5
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LL | with_default_type.unwrap_or(u64::default());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_type.unwrap_or_default()`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:281:14
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LL | with_vec.unwrap_or(vec![]);
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| vec![])`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:286:21
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LL | without_default.unwrap_or(Foo::new());
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| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(Foo::new)`
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error: use of `or_insert` followed by a function call
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--> $DIR/methods.rs:289:19
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LL | map.entry(42).or_insert(String::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
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error: use of `or_insert` followed by a function call
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--> $DIR/methods.rs:292:21
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LL | btree.entry(42).or_insert(String::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:295:21
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LL | let _ = stringy.unwrap_or("".to_owned());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "".to_owned())`
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error: called `.iter().nth()` on a Vec. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:306:23
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LL | let bad_vec = some_vec.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::iter-nth` implied by `-D warnings`
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:307:26
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LL | let bad_slice = &some_vec[..].iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:308:31
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LL | let bad_boxed_slice = boxed_slice.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a VecDeque. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:309:29
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LL | let bad_vec_deque = some_vec_deque.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a Vec. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:314:23
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LL | let bad_vec = some_vec.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a slice. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:317:26
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LL | let bad_slice = &some_vec[..].iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a VecDeque. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:320:29
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LL | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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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
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--> $DIR/methods.rs:332:13
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LL | let _ = opt.unwrap();
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| ^^^^^^^^^^^^
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= note: `-D clippy::option-unwrap-used` implied by `-D warnings`
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error: aborting due to 43 previous errors
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