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move starts_ends_with tests

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This commit is contained in:
Cameron Steffen 2017-10-09 22:45:03 -05:00
parent 73a1dd8e7f
commit c1a147f48e
4 changed files with 202 additions and 235 deletions
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36
tests/ui/methods.rs
View File

@ -432,12 +432,6 @@ struct MyErrorWithParam<T> {
x: T x: T
} }
#[allow(unnecessary_operation)]
fn starts_with() {
"".chars().next() == Some(' ');
Some(' ') != "".chars().next();
}
fn str_extend_chars() { fn str_extend_chars() {
let abc = "abc"; let abc = "abc";
let def = String::from("def"); let def = String::from("def");
@ -557,33 +551,3 @@ fn iter_clone_collect() {
let v3 : HashSet<isize> = v.iter().cloned().collect(); let v3 : HashSet<isize> = v.iter().cloned().collect();
let v4 : VecDeque<isize> = v.iter().cloned().collect(); let v4 : VecDeque<isize> = v.iter().cloned().collect();
} }
fn chars_cmp_with_unwrap() {
let s = String::from("foo");
if s.chars().next().unwrap() == 'f' { // s.starts_with('f')
// Nothing here
}
if s.chars().next_back().unwrap() == 'o' { // s.ends_with('o')
// Nothing here
}
if s.chars().last().unwrap() == 'o' { // s.ends_with('o')
// Nothing here
}
if s.chars().next().unwrap() != 'f' { // !s.starts_with('f')
// Nothing here
}
if s.chars().next_back().unwrap() != 'o' { // !s.ends_with('o')
// Nothing here
}
if s.chars().last().unwrap() != 'o' { // !s.ends_with('o')
// Nothing here
}
}
#[allow(unnecessary_operation)]
fn ends_with() {
"".chars().last() == Some(' ');
Some(' ') != "".chars().last();
"".chars().next_back() == Some(' ');
Some(' ') != "".chars().next_back();
}

286
tests/ui/methods.stderr
View File

@ -547,321 +547,209 @@ error: called `ok().expect()` on a Result value. You can call `expect` directly
425 | res6.ok().expect("meh"); 425 | res6.ok().expect("meh");
| ^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^
error: you should use the `starts_with` method
--> $DIR/methods.rs:437:5
|
437 | "".chars().next() == Some(' ');
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `"".starts_with(' ')`
|
= note: `-D chars-next-cmp` implied by `-D warnings`
error: you should use the `starts_with` method
--> $DIR/methods.rs:438:5
|
438 | Some(' ') != "".chars().next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!"".starts_with(' ')`
error: calling `.extend(_.chars())` error: calling `.extend(_.chars())`
--> $DIR/methods.rs:447:5 --> $DIR/methods.rs:441:5
| |
447 | s.extend(abc.chars()); 441 | s.extend(abc.chars());
| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `s.push_str(abc)` | ^^^^^^^^^^^^^^^^^^^^^ help: try this: `s.push_str(abc)`
| |
= note: `-D string-extend-chars` implied by `-D warnings` = note: `-D string-extend-chars` implied by `-D warnings`
error: calling `.extend(_.chars())` error: calling `.extend(_.chars())`
--> $DIR/methods.rs:450:5 --> $DIR/methods.rs:444:5
| |
450 | s.extend("abc".chars()); 444 | s.extend("abc".chars());
| ^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `s.push_str("abc")` | ^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `s.push_str("abc")`
error: calling `.extend(_.chars())` error: calling `.extend(_.chars())`
--> $DIR/methods.rs:453:5 --> $DIR/methods.rs:447:5
| |
453 | s.extend(def.chars()); 447 | s.extend(def.chars());
| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `s.push_str(&def)` | ^^^^^^^^^^^^^^^^^^^^^ help: try this: `s.push_str(&def)`
error: using `clone` on a `Copy` type error: using `clone` on a `Copy` type
--> $DIR/methods.rs:464:5 --> $DIR/methods.rs:458:5
| |
464 | 42.clone(); 458 | 42.clone();
| ^^^^^^^^^^ help: try removing the `clone` call: `42` | ^^^^^^^^^^ help: try removing the `clone` call: `42`
| |
= note: `-D clone-on-copy` implied by `-D warnings` = note: `-D clone-on-copy` implied by `-D warnings`
error: using `clone` on a `Copy` type error: using `clone` on a `Copy` type
--> $DIR/methods.rs:468:5 --> $DIR/methods.rs:462:5
| |
468 | (&42).clone(); 462 | (&42).clone();
| ^^^^^^^^^^^^^ help: try dereferencing it: `*(&42)` | ^^^^^^^^^^^^^ help: try dereferencing it: `*(&42)`
error: using '.clone()' on a ref-counted pointer error: using '.clone()' on a ref-counted pointer
--> $DIR/methods.rs:478:5 --> $DIR/methods.rs:472:5
| |
478 | rc.clone(); 472 | rc.clone();
| ^^^^^^^^^^ help: try this: `Rc::clone(&rc)` | ^^^^^^^^^^ help: try this: `Rc::clone(&rc)`
| |
= note: `-D clone-on-ref-ptr` implied by `-D warnings` = note: `-D clone-on-ref-ptr` implied by `-D warnings`
error: using '.clone()' on a ref-counted pointer error: using '.clone()' on a ref-counted pointer
--> $DIR/methods.rs:481:5 --> $DIR/methods.rs:475:5
| |
481 | arc.clone(); 475 | arc.clone();
| ^^^^^^^^^^^ help: try this: `Arc::clone(&arc)` | ^^^^^^^^^^^ help: try this: `Arc::clone(&arc)`
error: using '.clone()' on a ref-counted pointer error: using '.clone()' on a ref-counted pointer
--> $DIR/methods.rs:484:5 --> $DIR/methods.rs:478:5
| |
484 | rcweak.clone(); 478 | rcweak.clone();
| ^^^^^^^^^^^^^^ help: try this: `Weak::clone(&rcweak)` | ^^^^^^^^^^^^^^ help: try this: `Weak::clone(&rcweak)`
error: using '.clone()' on a ref-counted pointer error: using '.clone()' on a ref-counted pointer
--> $DIR/methods.rs:487:5 --> $DIR/methods.rs:481:5
| |
487 | arc_weak.clone(); 481 | arc_weak.clone();
| ^^^^^^^^^^^^^^^^ help: try this: `Weak::clone(&arc_weak)` | ^^^^^^^^^^^^^^^^ help: try this: `Weak::clone(&arc_weak)`
error: using `clone` on a `Copy` type error: using `clone` on a `Copy` type
--> $DIR/methods.rs:494:5 --> $DIR/methods.rs:488:5
| |
494 | t.clone(); 488 | t.clone();
| ^^^^^^^^^ help: try removing the `clone` call: `t` | ^^^^^^^^^ help: try removing the `clone` call: `t`
error: using `clone` on a `Copy` type error: using `clone` on a `Copy` type
--> $DIR/methods.rs:496:5 --> $DIR/methods.rs:490:5
| |
496 | Some(t).clone(); 490 | Some(t).clone();
| ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `Some(t)` | ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `Some(t)`
error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type
--> $DIR/methods.rs:502:22 --> $DIR/methods.rs:496:22
| |
502 | let z: &Vec<_> = y.clone(); 496 | let z: &Vec<_> = y.clone();
| ^^^^^^^^^ help: try dereferencing it: `(*y).clone()` | ^^^^^^^^^ help: try dereferencing it: `(*y).clone()`
| |
= note: `-D clone-double-ref` implied by `-D warnings` = note: `-D clone-double-ref` implied by `-D warnings`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:509:13 --> $DIR/methods.rs:503:13
| |
509 | x.split("x"); 503 | x.split("x");
| --------^^^- help: try using a char instead: `x.split('x')` | --------^^^- help: try using a char instead: `x.split('x')`
| |
= note: `-D single-char-pattern` implied by `-D warnings` = note: `-D single-char-pattern` implied by `-D warnings`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:526:16 --> $DIR/methods.rs:520:16
| |
526 | x.contains("x"); 520 | x.contains("x");
| -----------^^^- help: try using a char instead: `x.contains('x')` | -----------^^^- help: try using a char instead: `x.contains('x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:527:19 --> $DIR/methods.rs:521:19
| |
527 | x.starts_with("x"); 521 | x.starts_with("x");
| --------------^^^- help: try using a char instead: `x.starts_with('x')` | --------------^^^- help: try using a char instead: `x.starts_with('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:522:17
|
522 | x.ends_with("x");
| ------------^^^- help: try using a char instead: `x.ends_with('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:523:12
|
523 | x.find("x");
| -------^^^- help: try using a char instead: `x.find('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:524:13
|
524 | x.rfind("x");
| --------^^^- help: try using a char instead: `x.rfind('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:525:14
|
525 | x.rsplit("x");
| ---------^^^- help: try using a char instead: `x.rsplit('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:526:24
|
526 | x.split_terminator("x");
| -------------------^^^- help: try using a char instead: `x.split_terminator('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:527:25
|
527 | x.rsplit_terminator("x");
| --------------------^^^- help: try using a char instead: `x.rsplit_terminator('x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:528:17 --> $DIR/methods.rs:528:17
| |
528 | x.ends_with("x"); 528 | x.splitn(0, "x");
| ------------^^^- help: try using a char instead: `x.ends_with('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:529:12
|
529 | x.find("x");
| -------^^^- help: try using a char instead: `x.find('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:530:13
|
530 | x.rfind("x");
| --------^^^- help: try using a char instead: `x.rfind('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:531:14
|
531 | x.rsplit("x");
| ---------^^^- help: try using a char instead: `x.rsplit('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:532:24
|
532 | x.split_terminator("x");
| -------------------^^^- help: try using a char instead: `x.split_terminator('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:533:25
|
533 | x.rsplit_terminator("x");
| --------------------^^^- help: try using a char instead: `x.rsplit_terminator('x')`
error: single-character string constant used as pattern
--> $DIR/methods.rs:534:17
|
534 | x.splitn(0, "x");
| ------------^^^- help: try using a char instead: `x.splitn(0, 'x')` | ------------^^^- help: try using a char instead: `x.splitn(0, 'x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:535:18 --> $DIR/methods.rs:529:18
| |
535 | x.rsplitn(0, "x"); 529 | x.rsplitn(0, "x");
| -------------^^^- help: try using a char instead: `x.rsplitn(0, 'x')` | -------------^^^- help: try using a char instead: `x.rsplitn(0, 'x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:536:15 --> $DIR/methods.rs:530:15
| |
536 | x.matches("x"); 530 | x.matches("x");
| ----------^^^- help: try using a char instead: `x.matches('x')` | ----------^^^- help: try using a char instead: `x.matches('x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:537:16 --> $DIR/methods.rs:531:16
| |
537 | x.rmatches("x"); 531 | x.rmatches("x");
| -----------^^^- help: try using a char instead: `x.rmatches('x')` | -----------^^^- help: try using a char instead: `x.rmatches('x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:538:21 --> $DIR/methods.rs:532:21
| |
538 | x.match_indices("x"); 532 | x.match_indices("x");
| ----------------^^^- help: try using a char instead: `x.match_indices('x')` | ----------------^^^- help: try using a char instead: `x.match_indices('x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:539:22 --> $DIR/methods.rs:533:22
| |
539 | x.rmatch_indices("x"); 533 | x.rmatch_indices("x");
| -----------------^^^- help: try using a char instead: `x.rmatch_indices('x')` | -----------------^^^- help: try using a char instead: `x.rmatch_indices('x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:540:25 --> $DIR/methods.rs:534:25
| |
540 | x.trim_left_matches("x"); 534 | x.trim_left_matches("x");
| --------------------^^^- help: try using a char instead: `x.trim_left_matches('x')` | --------------------^^^- help: try using a char instead: `x.trim_left_matches('x')`
error: single-character string constant used as pattern error: single-character string constant used as pattern
--> $DIR/methods.rs:541:26 --> $DIR/methods.rs:535:26
| |
541 | x.trim_right_matches("x"); 535 | x.trim_right_matches("x");
| ---------------------^^^- help: try using a char instead: `x.trim_right_matches('x')` | ---------------------^^^- help: try using a char instead: `x.trim_right_matches('x')`
error: you are getting the inner pointer of a temporary `CString` error: you are getting the inner pointer of a temporary `CString`
--> $DIR/methods.rs:551:5 --> $DIR/methods.rs:545:5
| |
551 | CString::new("foo").unwrap().as_ptr(); 545 | CString::new("foo").unwrap().as_ptr();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
= note: `-D temporary-cstring-as-ptr` implied by `-D warnings` = note: `-D temporary-cstring-as-ptr` implied by `-D warnings`
= note: that pointer will be invalid outside this expression = note: that pointer will be invalid outside this expression
help: assign the `CString` to a variable to extend its lifetime help: assign the `CString` to a variable to extend its lifetime
--> $DIR/methods.rs:551:5 --> $DIR/methods.rs:545:5
| |
551 | CString::new("foo").unwrap().as_ptr(); 545 | CString::new("foo").unwrap().as_ptr();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable error: called `cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
--> $DIR/methods.rs:556:27 --> $DIR/methods.rs:550:27
| |
556 | let v2 : Vec<isize> = v.iter().cloned().collect(); 550 | let v2 : Vec<isize> = v.iter().cloned().collect();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
= note: `-D iter-cloned-collect` implied by `-D warnings` = note: `-D iter-cloned-collect` implied by `-D warnings`
error: you should use the `starts_with` method
--> $DIR/methods.rs:563:8
|
563 | if s.chars().next().unwrap() == 'f' { // s.starts_with('f')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `s.starts_with('f')`
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:563:8
|
563 | if s.chars().next().unwrap() == 'f' { // s.starts_with('f')
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: you should use the `ends_with` method
--> $DIR/methods.rs:566:8
|
566 | if s.chars().next_back().unwrap() == 'o' { // s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `s.ends_with('o')`
|
= note: `-D chars-last-cmp` implied by `-D warnings`
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:566:8
|
566 | if s.chars().next_back().unwrap() == 'o' { // s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: you should use the `ends_with` method
--> $DIR/methods.rs:569:8
|
569 | if s.chars().last().unwrap() == 'o' { // s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `s.ends_with('o')`
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:569:8
|
569 | if s.chars().last().unwrap() == 'o' { // s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: you should use the `starts_with` method
--> $DIR/methods.rs:572:8
|
572 | if s.chars().next().unwrap() != 'f' { // !s.starts_with('f')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!s.starts_with('f')`
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:572:8
|
572 | if s.chars().next().unwrap() != 'f' { // !s.starts_with('f')
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: you should use the `ends_with` method
--> $DIR/methods.rs:575:8
|
575 | if s.chars().next_back().unwrap() != 'o' { // !s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!s.ends_with('o')`
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:575:8
|
575 | if s.chars().next_back().unwrap() != 'o' { // !s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: you should use the `ends_with` method
--> $DIR/methods.rs:578:8
|
578 | if s.chars().last().unwrap() != 'o' { // !s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!s.ends_with('o')`
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:578:8
|
578 | if s.chars().last().unwrap() != 'o' { // !s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: you should use the `ends_with` method
--> $DIR/methods.rs:585:5
|
585 | "".chars().last() == Some(' ');
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `"".ends_with(' ')`
error: you should use the `ends_with` method
--> $DIR/methods.rs:586:5
|
586 | Some(' ') != "".chars().last();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!"".ends_with(' ')`
error: you should use the `ends_with` method
--> $DIR/methods.rs:587:5
|
587 | "".chars().next_back() == Some(' ');
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `"".ends_with(' ')`
error: you should use the `ends_with` method
--> $DIR/methods.rs:588:5
|
588 | Some(' ') != "".chars().next_back();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!"".ends_with(' ')`

39
tests/ui/starts_ends_with.rs Normal file
View File

@ -0,0 +1,39 @@
#![allow(dead_code)]
fn main() {}
#[allow(unnecessary_operation)]
fn starts_with() {
"".chars().next() == Some(' ');
Some(' ') != "".chars().next();
}
fn chars_cmp_with_unwrap() {
let s = String::from("foo");
if s.chars().next().unwrap() == 'f' { // s.starts_with('f')
// Nothing here
}
if s.chars().next_back().unwrap() == 'o' { // s.ends_with('o')
// Nothing here
}
if s.chars().last().unwrap() == 'o' { // s.ends_with('o')
// Nothing here
}
if s.chars().next().unwrap() != 'f' { // !s.starts_with('f')
// Nothing here
}
if s.chars().next_back().unwrap() != 'o' { // !s.ends_with('o')
// Nothing here
}
if s.chars().last().unwrap() != 'o' { // !s.ends_with('o')
// Nothing here
}
}
#[allow(unnecessary_operation)]
fn ends_with() {
"".chars().last() == Some(' ');
Some(' ') != "".chars().last();
"".chars().next_back() == Some(' ');
Some(' ') != "".chars().next_back();
}

76
tests/ui/starts_ends_with.stderr Normal file
View File

@ -0,0 +1,76 @@
error: you should use the `starts_with` method
--> $DIR/starts_ends_with.rs:7:5
|
7 | "".chars().next() == Some(' ');
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `"".starts_with(' ')`
|
= note: `-D chars-next-cmp` implied by `-D warnings`
error: you should use the `starts_with` method
--> $DIR/starts_ends_with.rs:8:5
|
8 | Some(' ') != "".chars().next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!"".starts_with(' ')`
error: you should use the `starts_with` method
--> $DIR/starts_ends_with.rs:13:8
|
13 | if s.chars().next().unwrap() == 'f' { // s.starts_with('f')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `s.starts_with('f')`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:16:8
|
16 | if s.chars().next_back().unwrap() == 'o' { // s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `s.ends_with('o')`
|
= note: `-D chars-last-cmp` implied by `-D warnings`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:19:8
|
19 | if s.chars().last().unwrap() == 'o' { // s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `s.ends_with('o')`
error: you should use the `starts_with` method
--> $DIR/starts_ends_with.rs:22:8
|
22 | if s.chars().next().unwrap() != 'f' { // !s.starts_with('f')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!s.starts_with('f')`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:25:8
|
25 | if s.chars().next_back().unwrap() != 'o' { // !s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!s.ends_with('o')`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:28:8
|
28 | if s.chars().last().unwrap() != 'o' { // !s.ends_with('o')
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!s.ends_with('o')`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:35:5
|
35 | "".chars().last() == Some(' ');
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `"".ends_with(' ')`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:36:5
|
36 | Some(' ') != "".chars().last();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!"".ends_with(' ')`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:37:5
|
37 | "".chars().next_back() == Some(' ');
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `"".ends_with(' ')`
error: you should use the `ends_with` method
--> $DIR/starts_ends_with.rs:38:5
|
38 | Some(' ') != "".chars().next_back();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `!"".ends_with(' ')`