mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-30 16:39:26 +00:00
42f03539ca
I found this because we only had two test cases in total for this lint. It turns out the functionality is fully covered by rustc these days. [Playground Examples](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=eb8ee6db389c77180c9fb152d3c608f4) changelog: Deprecate `unused_collect` lint. This is fully covered by rustc's `#[must_use]` on `collect` cc #2846
156 lines
5.7 KiB
Text
156 lines
5.7 KiB
Text
error: this range is empty so this for loop will never run
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--> $DIR/for_loop.rs:39:14
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LL | 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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LL | 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:43:14
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LL | 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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LL | 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:47:14
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LL | 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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LL | 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:51:14
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LL | 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:76:14
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LL | 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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LL | 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:80:14
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LL | 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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LL | 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:84:14
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LL | 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:106:15
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LL | 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:108:15
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LL | 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:111:15
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LL | 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:114:15
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LL | 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:119:15
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LL | 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:123:15
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LL | 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:128:15
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LL | 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:131:15
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LL | 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:134:15
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LL | 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:137:15
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LL | 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:140:15
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LL | 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:143:15
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LL | 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:146:15
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LL | 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:148:15
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LL | for _v in vec.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: aborting due to 21 previous errors
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