mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-27 23:20:39 +00:00
489 lines
17 KiB
Text
489 lines
17 KiB
Text
error: for loop over `option`, which is an `Option`. This is more readably written as an `if let` statement.
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--> $DIR/for_loop.rs:27:14
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27 | for x in option {
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| ^^^^^^
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= note: `-D clippy::for-loop-over-option` implied by `-D warnings`
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= help: consider replacing `for x in option` with `if let Some(x) = option`
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error: for loop over `result`, which is a `Result`. This is more readably written as an `if let` statement.
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--> $DIR/for_loop.rs:32:14
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32 | for x in result {
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| ^^^^^^
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= note: `-D clippy::for-loop-over-result` implied by `-D warnings`
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= help: consider replacing `for x in result` with `if let Ok(x) = result`
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error: for loop over `option.ok_or("x not found")`, which is a `Result`. This is more readably written as an `if let` statement.
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--> $DIR/for_loop.rs:36:14
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36 | for x in option.ok_or("x not found") {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: consider replacing `for x in option.ok_or("x not found")` with `if let Ok(x) = option.ok_or("x not found")`
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error: you are iterating over `Iterator::next()` which is an Option; this will compile but is probably not what you want
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--> $DIR/for_loop.rs:42:14
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42 | for x in v.iter().next() {
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| ^^^^^^^^^^^^^^^
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= note: `-D clippy::iter-next-loop` implied by `-D warnings`
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error: for loop over `v.iter().next().and(Some(0))`, which is an `Option`. This is more readably written as an `if let` statement.
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--> $DIR/for_loop.rs:47:14
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47 | for x in v.iter().next().and(Some(0)) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: consider replacing `for x in v.iter().next().and(Some(0))` with `if let Some(x) = v.iter().next().and(Some(0))`
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error: for loop over `v.iter().next().ok_or("x not found")`, which is a `Result`. This is more readably written as an `if let` statement.
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--> $DIR/for_loop.rs:51:14
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51 | for x in v.iter().next().ok_or("x not found") {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: consider replacing `for x in v.iter().next().ok_or("x not found")` with `if let Ok(x) = v.iter().next().ok_or("x not found")`
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error: this loop never actually loops
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--> $DIR/for_loop.rs:63:5
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63 | / while let Some(x) = option {
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64 | | println!("{}", x);
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65 | | break;
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66 | | }
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| |_____^
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= note: `-D clippy::never-loop` implied by `-D warnings`
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error: this loop never actually loops
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--> $DIR/for_loop.rs:69:5
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69 | / while let Ok(x) = result {
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70 | | println!("{}", x);
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71 | | break;
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72 | | }
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| |_____^
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error: the loop variable `i` is only used to index `vec`.
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--> $DIR/for_loop.rs:96:14
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96 | for i in 0..vec.len() {
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| ^^^^^^^^^^^^
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= note: `-D clippy::needless-range-loop` implied by `-D warnings`
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help: consider using an iterator
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96 | for <item> in &vec {
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| ^^^^^^ ^^^^
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error: the loop variable `i` is only used to index `vec`.
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--> $DIR/for_loop.rs:105:14
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105 | for i in 0..vec.len() {
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| ^^^^^^^^^^^^
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help: consider using an iterator
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105 | for <item> in &vec {
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| ^^^^^^ ^^^^
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error: the loop variable `j` is only used to index `STATIC`.
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--> $DIR/for_loop.rs:110:14
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110 | for j in 0..4 {
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| ^^^^
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help: consider using an iterator
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110 | for <item> in &STATIC {
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| ^^^^^^ ^^^^^^^
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error: the loop variable `j` is only used to index `CONST`.
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--> $DIR/for_loop.rs:114:14
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114 | for j in 0..4 {
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| ^^^^
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help: consider using an iterator
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114 | for <item> in &CONST {
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| ^^^^^^ ^^^^^^
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error: the loop variable `i` is used to index `vec`
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--> $DIR/for_loop.rs:118:14
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118 | for i in 0..vec.len() {
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| ^^^^^^^^^^^^
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help: consider using an iterator
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118 | for (i, <item>) in vec.iter().enumerate() {
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| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is only used to index `vec2`.
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--> $DIR/for_loop.rs:126:14
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126 | for i in 0..vec.len() {
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| ^^^^^^^^^^^^
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help: consider using an iterator
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126 | for <item> in vec2.iter().take(vec.len()) {
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| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is only used to index `vec`.
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--> $DIR/for_loop.rs:130:14
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130 | for i in 5..vec.len() {
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| ^^^^^^^^^^^^
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help: consider using an iterator
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130 | for <item> in vec.iter().skip(5) {
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| ^^^^^^ ^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is only used to index `vec`.
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--> $DIR/for_loop.rs:134:14
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134 | for i in 0..MAX_LEN {
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| ^^^^^^^^^^
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help: consider using an iterator
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134 | for <item> in vec.iter().take(MAX_LEN) {
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| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is only used to index `vec`.
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--> $DIR/for_loop.rs:138:14
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138 | for i in 0..=MAX_LEN {
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| ^^^^^^^^^^^
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help: consider using an iterator
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138 | for <item> in vec.iter().take(MAX_LEN + 1) {
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| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is only used to index `vec`.
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--> $DIR/for_loop.rs:142:14
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142 | for i in 5..10 {
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| ^^^^^
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help: consider using an iterator
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142 | for <item> in vec.iter().take(10).skip(5) {
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| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is only used to index `vec`.
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--> $DIR/for_loop.rs:146:14
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146 | for i in 5..=10 {
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| ^^^^^^
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help: consider using an iterator
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146 | for <item> in vec.iter().take(10 + 1).skip(5) {
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| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is used to index `vec`
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--> $DIR/for_loop.rs:150:14
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150 | for i in 5..vec.len() {
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| ^^^^^^^^^^^^
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help: consider using an iterator
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150 | for (i, <item>) in vec.iter().enumerate().skip(5) {
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| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: the loop variable `i` is used to index `vec`
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--> $DIR/for_loop.rs:154:14
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154 | for i in 5..10 {
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| ^^^^^
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help: consider using an iterator
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154 | for (i, <item>) in vec.iter().enumerate().take(10).skip(5) {
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| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:158:14
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158 | for i in 10..0 {
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| ^^^^^
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= note: `-D clippy::reverse-range-loop` implied by `-D warnings`
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help: consider using the following if you are attempting to iterate over this range in reverse
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158 | for i in (0..10).rev() {
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| ^^^^^^^^^^^^^
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error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:162:14
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162 | for i in 10..=0 {
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| ^^^^^^
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help: consider using the following if you are attempting to iterate over this range in reverse
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162 | for i in (0...10).rev() {
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| ^^^^^^^^^^^^^^
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error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:166:14
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166 | for i in MAX_LEN..0 {
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| ^^^^^^^^^^
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help: consider using the following if you are attempting to iterate over this range in reverse
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166 | for i in (0..MAX_LEN).rev() {
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| ^^^^^^^^^^^^^^^^^^
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error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:170:14
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170 | for i in 5..5 {
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| ^^^^
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error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:195:14
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195 | for i in 10..5 + 4 {
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| ^^^^^^^^^
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help: consider using the following if you are attempting to iterate over this range in reverse
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195 | for i in (5 + 4..10).rev() {
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| ^^^^^^^^^^^^^^^^^
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error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:199:14
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199 | for i in (5 + 2)..(3 - 1) {
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| ^^^^^^^^^^^^^^^^
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help: consider using the following if you are attempting to iterate over this range in reverse
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199 | for i in ((3 - 1)..(5 + 2)).rev() {
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:203:14
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203 | for i in (5 + 2)..(8 - 1) {
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| ^^^^^^^^^^^^^^^^
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:225:15
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225 | for _v in vec.iter() {}
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| ^^^^^^^^^^ help: to write this more concisely, try: `&vec`
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= note: `-D clippy::explicit-iter-loop` implied by `-D warnings`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:227:15
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227 | for _v in vec.iter_mut() {}
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| ^^^^^^^^^^^^^^ help: to write this more concisely, try: `&mut vec`
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error: it is more concise to loop over containers instead of using explicit iteration methods`
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--> $DIR/for_loop.rs:230:15
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230 | for _v in out_vec.into_iter() {}
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| ^^^^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `out_vec`
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= note: `-D clippy::explicit-into-iter-loop` implied by `-D warnings`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:233:15
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233 | for _v in array.into_iter() {}
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| ^^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&array`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:238:15
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238 | for _v in [1, 2, 3].iter() {}
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| ^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&[1, 2, 3]`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:242:15
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242 | for _v in [0; 32].iter() {}
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| ^^^^^^^^^^^^^^ help: to write this more concisely, try: `&[0; 32]`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:247:15
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247 | for _v in ll.iter() {}
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| ^^^^^^^^^ help: to write this more concisely, try: `&ll`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:250:15
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250 | for _v in vd.iter() {}
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| ^^^^^^^^^ help: to write this more concisely, try: `&vd`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:253:15
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253 | for _v in bh.iter() {}
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| ^^^^^^^^^ help: to write this more concisely, try: `&bh`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:256:15
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256 | for _v in hm.iter() {}
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| ^^^^^^^^^ help: to write this more concisely, try: `&hm`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:259:15
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259 | for _v in bt.iter() {}
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| ^^^^^^^^^ help: to write this more concisely, try: `&bt`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:262:15
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262 | for _v in hs.iter() {}
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| ^^^^^^^^^ help: to write this more concisely, try: `&hs`
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error: it is more concise to loop over references to containers instead of using explicit iteration methods
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--> $DIR/for_loop.rs:265:15
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265 | for _v in bs.iter() {}
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| ^^^^^^^^^ help: to write this more concisely, try: `&bs`
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error: you are iterating over `Iterator::next()` which is an Option; this will compile but is probably not what you want
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--> $DIR/for_loop.rs:267:15
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267 | for _v in vec.iter().next() {}
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| ^^^^^^^^^^^^^^^^^
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error: you are collect()ing an iterator and throwing away the result. Consider using an explicit for loop to exhaust the iterator
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--> $DIR/for_loop.rs:274:5
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274 | vec.iter().cloned().map(|x| out.push(x)).collect::<Vec<_>>();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::unused-collect` implied by `-D warnings`
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error: you seem to want to iterate on a map's values
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--> $DIR/for_loop.rs:385:19
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385 | for (_, v) in &m {
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| ^^
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= note: `-D clippy::for-kv-map` implied by `-D warnings`
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help: use the corresponding method
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385 | for v in m.values() {
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| ^ ^^^^^^^^^^
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error: you seem to want to iterate on a map's values
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--> $DIR/for_loop.rs:390:19
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390 | for (_, v) in &*m {
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| ^^^
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help: use the corresponding method
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390 | for v in (*m).values() {
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| ^ ^^^^^^^^^^^^^
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error: you seem to want to iterate on a map's values
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--> $DIR/for_loop.rs:398:19
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398 | for (_, v) in &mut m {
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| ^^^^^^
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help: use the corresponding method
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398 | for v in m.values_mut() {
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| ^ ^^^^^^^^^^^^^^
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error: you seem to want to iterate on a map's values
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--> $DIR/for_loop.rs:403:19
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403 | for (_, v) in &mut *m {
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| ^^^^^^^
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help: use the corresponding method
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403 | for v in (*m).values_mut() {
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| ^ ^^^^^^^^^^^^^^^^^
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error: you seem to want to iterate on a map's keys
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--> $DIR/for_loop.rs:409:24
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409 | for (k, _value) in rm {
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| ^^
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help: use the corresponding method
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409 | for k in rm.keys() {
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| ^ ^^^^^^^^^
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:462:14
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462 | for i in 0..src.len() {
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| ^^^^^^^^^^^^ help: try replacing the loop by: `dst[..src.len()].clone_from_slice(&src[..])`
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= note: `-D clippy::manual-memcpy` implied by `-D warnings`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:467:14
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467 | for i in 0..src.len() {
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| ^^^^^^^^^^^^ help: try replacing the loop by: `dst[10..(src.len() + 10)].clone_from_slice(&src[..])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:472:14
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472 | for i in 0..src.len() {
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| ^^^^^^^^^^^^ help: try replacing the loop by: `dst[..src.len()].clone_from_slice(&src[10..])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:477:14
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477 | for i in 11..src.len() {
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| ^^^^^^^^^^^^^ help: try replacing the loop by: `dst[11..src.len()].clone_from_slice(&src[(11 - 10)..(src.len() - 10)])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:482:14
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482 | for i in 0..dst.len() {
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| ^^^^^^^^^^^^ help: try replacing the loop by: `dst.clone_from_slice(&src[..dst.len()])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:495:14
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495 | for i in 10..256 {
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| ^^^^^^^
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help: try replacing the loop by
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495 | for i in dst[10..256].clone_from_slice(&src[(10 - 5)..(256 - 5)])
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496 | dst2[(10 + 500)..(256 + 500)].clone_from_slice(&src[10..256]) {
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:507:14
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507 | for i in 10..LOOP_OFFSET {
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| ^^^^^^^^^^^^^^^ help: try replacing the loop by: `dst[(10 + LOOP_OFFSET)..(LOOP_OFFSET + LOOP_OFFSET)].clone_from_slice(&src[(10 - some_var)..(LOOP_OFFSET - some_var)])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:520:14
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520 | for i in 0..src_vec.len() {
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| ^^^^^^^^^^^^^^^^ help: try replacing the loop by: `dst_vec[..src_vec.len()].clone_from_slice(&src_vec[..])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:549:14
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549 | for i in from..from + src.len() {
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| ^^^^^^^^^^^^^^^^^^^^^^ help: try replacing the loop by: `dst[from..from + src.len()].clone_from_slice(&src[0..(from + src.len() - from)])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:553:14
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553 | for i in from..from + 3 {
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| ^^^^^^^^^^^^^^ help: try replacing the loop by: `dst[from..from + 3].clone_from_slice(&src[0..(from + 3 - from)])`
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error: it looks like you're manually copying between slices
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--> $DIR/for_loop.rs:560:14
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560 | for i in 0..src.len() {
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| ^^^^^^^^^^^^ help: try replacing the loop by: `dst[..src.len()].clone_from_slice(&src[..])`
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error: aborting due to 59 previous errors
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