rust-clippy/tests/ui/option_if_let_else.stderr

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:10:5
   |
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`
   = help: to override `-D warnings` add `#[allow(clippy::option_if_let_else)]`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:28:13
   |
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
  --> tests/ui/option_if_let_else.rs:29:13
   |
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
  --> tests/ui/option_if_let_else.rs:30:13
   |
LL |       let _ = if let Some(s) = &mut num {
   |  _____________^
LL | |         *s += 1;
LL | |         s
LL | |     } else {
LL | |         &0
LL | |     };
   | |_____^
   |
help: try
   |
LL ~     let _ = num.as_mut().map_or(&0, |s| {
LL +         *s += 1;
LL +         s
LL ~     });
   |

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:36:13
   |
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
  --> tests/ui/option_if_let_else.rs:37:13
   |
LL |       let _ = if let Some(mut s) = num {
   |  _____________^
LL | |         s += 1;
LL | |         s
LL | |     } else {
LL | |         0
LL | |     };
   | |_____^
   |
help: try
   |
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
  --> tests/ui/option_if_let_else.rs:43:13
   |
LL |       let _ = if let Some(ref mut s) = num {
   |  _____________^
LL | |         *s += 1;
LL | |         s
LL | |     } else {
LL | |         &0
LL | |     };
   | |_____^
   |
help: try
   |
LL ~     let _ = num.as_mut().map_or(&0, |s| {
LL +         *s += 1;
LL +         s
LL ~     });
   |

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:52:5
   |
LL | /     if let Some(x) = arg {
LL | |         let y = x * x;
LL | |         y * y
LL | |     } else {
LL | |         13
LL | |     }
   | |_____^
   |
help: try
   |
LL ~     arg.map_or(13, |x| {
LL +         let y = x * x;
LL +         y * y
LL +     })
   |

error: use Option::map_or_else instead of an if let/else
  --> tests/ui/option_if_let_else.rs:65:13
   |
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
  --> tests/ui/option_if_let_else.rs:74:13
   |
LL |       let _ = if let Some(x) = arg {
   |  _____________^
LL | |         x * x * x * x
LL | |     } else {
LL | |         let mut y = 1;
...  |
LL | |         y
LL | |     };
   | |_____^
   |
help: try
   |
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_else instead of an if let/else
  --> tests/ui/option_if_let_else.rs:107:13
   |
LL | /             if let Some(idx) = s.find('.') {
LL | |                 vec![s[..idx].to_string(), s[idx..].to_string()]
LL | |             } else {
LL | |                 vec![s.to_string()]
LL | |             }
   | |_____________^ help: try: `s.find('.').map_or_else(|| vec![s.to_string()], |idx| vec![s[..idx].to_string(), s[idx..].to_string()])`

error: use Option::map_or_else instead of an if let/else
  --> tests/ui/option_if_let_else.rs:118:5
   |
LL | /     if let Ok(binding) = variable {
LL | |         println!("Ok {binding}");
LL | |         true
LL | |     } else {
LL | |         println!("Err");
LL | |         false
LL | |     }
   | |_____^
   |
help: try
   |
LL ~     variable.map_or_else(|_| {
LL +         println!("Err");
LL +         false
LL +     }, |binding| {
LL +         println!("Ok {binding}");
LL +         true
LL +     })
   |

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:142:13
   |
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
  --> tests/ui/option_if_let_else.rs:152:13
   |
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 instead of an if let/else
  --> tests/ui/option_if_let_else.rs:180:13
   |
LL |     let _ = if let Some(x) = Some(0) { s.len() + x } else { s.len() };
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Some(0).map_or(s.len(), |x| s.len() + x)`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:184:13
   |
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: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:223:13
   |
LL |       let _ = match s {
   |  _____________^
LL | |         Some(string) => string.len(),
LL | |         None => 1,
LL | |     };
   | |_____^ help: try: `s.map_or(1, |string| string.len())`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:227:13
   |
LL |       let _ = match Some(10) {
   |  _____________^
LL | |         Some(a) => a + 1,
LL | |         None => 5,
LL | |     };
   | |_____^ help: try: `Some(10).map_or(5, |a| a + 1)`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:233:13
   |
LL |       let _ = match res {
   |  _____________^
LL | |         Ok(a) => a + 1,
LL | |         _ => 1,
LL | |     };
   | |_____^ help: try: `res.map_or(1, |a| a + 1)`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:237:13
   |
LL |       let _ = match res {
   |  _____________^
LL | |         Err(_) => 1,
LL | |         Ok(a) => a + 1,
LL | |     };
   | |_____^ help: try: `res.map_or(1, |a| a + 1)`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:241:13
   |
LL |     let _ = if let Ok(a) = res { a + 1 } else { 5 };
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `res.map_or(5, |a| a + 1)`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:258:17
   |
LL |           let _ = match initial {
   |  _________________^
LL | |             Some(value) => do_something(value),
LL | |             None => 42,
LL | |         };
   | |_________^ help: try: `initial.as_ref().map_or(42, |value| do_something(value))`

error: use Option::map_or instead of an if let/else
  --> tests/ui/option_if_let_else.rs:265:17
   |
LL |           let _ = match initial {
   |  _________________^
LL | |             Some(value) => do_something2(value),
LL | |             None => 42,
LL | |         };
   | |_________^ help: try: `initial.as_mut().map_or(42, |value| do_something2(value))`

error: use Option::map_or_else instead of an if let/else
  --> tests/ui/option_if_let_else.rs:288:24
   |
LL |       let mut _hashmap = if let Some(hm) = &opt {
   |  ________________________^
LL | |         hm.clone()
LL | |     } else {
LL | |         HashMap::new()
LL | |     };
   | |_____^ help: try: `opt.as_ref().map_or_else(HashMap::new, |hm| hm.clone())`

error: use Option::map_or_else instead of an if let/else
  --> tests/ui/option_if_let_else.rs:294:19
   |
LL |     let mut _hm = if let Some(hm) = &opt { hm.clone() } else { new_map!() };
   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.as_ref().map_or_else(|| new_map!(), |hm| hm.clone())`

error: aborting due to 25 previous errors