rust/tests/ui/option_if_let_else.stderr

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error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:8:5
|
LL | / if let Some(x) = string {
LL | | (true, x)
LL | | } else {
LL | | (false, "hello")
LL | | }
| |_____^ help: try: `string.map_or((false, "hello"), |x| (true, x))`
|
= note: `-D clippy::option-if-let-else` implied by `-D warnings`
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:26:13
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LL | let _ = if let Some(s) = *string { s.len() } else { 0 };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `string.map_or(0, |s| s.len())`
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:27:13
|
LL | let _ = if let Some(s) = &num { s } else { &0 };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `num.as_ref().map_or(&0, |s| s)`
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:28:13
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LL | let _ = if let Some(s) = &mut num {
| _____________^
LL | | *s += 1;
LL | | s
LL | | } else {
LL | | &mut 0
LL | | };
| |_____^
|
help: try
|
2021-08-11 14:21:33 +00:00
LL ~ let _ = num.as_mut().map_or(&mut 0, |s| {
LL + *s += 1;
LL + s
LL ~ });
|
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:34:13
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LL | let _ = if let Some(ref s) = num { s } else { &0 };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `num.as_ref().map_or(&0, |s| s)`
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:35:13
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LL | let _ = if let Some(mut s) = num {
| _____________^
LL | | s += 1;
LL | | s
LL | | } else {
LL | | 0
LL | | };
| |_____^
|
help: try
|
2021-08-11 14:21:33 +00:00
LL ~ let _ = num.map_or(0, |mut s| {
LL + s += 1;
LL + s
LL ~ });
|
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:41:13
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LL | let _ = if let Some(ref mut s) = num {
| _____________^
LL | | *s += 1;
LL | | s
LL | | } else {
LL | | &mut 0
LL | | };
| |_____^
|
help: try
|
2021-08-11 14:21:33 +00:00
LL ~ let _ = num.as_mut().map_or(&mut 0, |s| {
LL + *s += 1;
LL + s
LL ~ });
|
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:50:5
|
LL | / if let Some(x) = arg {
LL | | let y = x * x;
LL | | y * y
LL | | } else {
LL | | 13
LL | | }
| |_____^
|
help: try
|
2021-08-11 14:21:33 +00:00
LL ~ arg.map_or(13, |x| {
LL + let y = x * x;
LL + y * y
LL + })
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error: use Option::map_or_else instead of an if let/else
--> $DIR/option_if_let_else.rs:63:13
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LL | let _ = if let Some(x) = arg {
| _____________^
LL | | x
LL | | } else {
LL | | // map_or_else must be suggested
LL | | side_effect()
LL | | };
| |_____^ help: try: `arg.map_or_else(|| side_effect(), |x| x)`
error: use Option::map_or_else instead of an if let/else
--> $DIR/option_if_let_else.rs:72:13
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LL | let _ = if let Some(x) = arg {
| _____________^
LL | | x * x * x * x
LL | | } else {
LL | | let mut y = 1;
... |
LL | | y
LL | | };
| |_____^
|
help: try
|
2021-08-11 14:21:33 +00:00
LL ~ let _ = arg.map_or_else(|| {
LL + let mut y = 1;
LL + y = (y + 2 / y) / 2;
LL + y = (y + 2 / y) / 2;
LL + y
LL ~ }, |x| x * x * x * x);
|
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:101:13
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LL | let _ = if let Some(x) = optional { x + 2 } else { 5 };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `optional.map_or(5, |x| x + 2)`
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:110:13
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LL | let _ = if let Some(x) = Some(0) {
| _____________^
LL | | loop {
LL | | if x == 0 {
LL | | break x;
... |
LL | | 0
LL | | };
| |_____^
|
help: try
|
LL ~ let _ = Some(0).map_or(0, |x| loop {
LL + if x == 0 {
LL + break x;
LL + }
LL ~ });
|
error: use Option::map_or_else instead of an if let/else
--> $DIR/option_if_let_else.rs:138:13
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LL | let _ = if let Some(x) = Some(0) { s.len() + x } else { s.len() };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Some(0).map_or_else(|| s.len(), |x| s.len() + x)`
error: use Option::map_or instead of an if let/else
--> $DIR/option_if_let_else.rs:142:13
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LL | let _ = if let Some(x) = Some(0) {
| _____________^
LL | | let s = s;
LL | | s.len() + x
LL | | } else {
LL | | 1
LL | | };
| |_____^
|
help: try
|
LL ~ let _ = Some(0).map_or(1, |x| {
LL + let s = s;
LL + s.len() + x
LL ~ });
|
error: aborting due to 14 previous errors