1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
error[E0005]: refutable pattern in local binding
--> $DIR/bad-pattern.rs:13:13
|
LL | let 0 = v1;
| ^ pattern `1_u32..=u32::MAX` not covered
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
= note: the matched value is of type `u32`
help: you might want to use `if let` to ignore the variant that isn't matched
|
LL | if let 0 = v1 { todo!() };
| ++ +++++++++++
help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
|
LL | let _0 = v1;
| +
error[E0005]: refutable pattern in local binding
--> $DIR/bad-pattern.rs:14:14
|
LL | let (0 | 1) = v1;
| ^^^^^ pattern `2_u32..=u32::MAX` not covered
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
= note: the matched value is of type `u32`
help: you might want to use `if let` to ignore the variant that isn't matched
|
LL | if let (0 | 1) = v1 { todo!() };
| ++ +++++++++++
error[E0005]: refutable pattern in local binding
--> $DIR/bad-pattern.rs:15:13
|
LL | let 1.. = v1;
| ^^^ pattern `0_u32` not covered
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
= note: the matched value is of type `u32`
help: you might want to use `if let` to ignore the variant that isn't matched
|
LL | if let 1.. = v1 { todo!() };
| ++ +++++++++++
error[E0005]: refutable pattern in local binding
--> $DIR/bad-pattern.rs:16:13
|
LL | let [0, 0, 0, 0] = v2;
| ^^^^^^^^^^^^ pattern `[1_u32..=u32::MAX, _, _, _]` not covered
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
= note: the matched value is of type `[u32; 4]`
help: you might want to use `if let` to ignore the variant that isn't matched
|
LL | if let [0, 0, 0, 0] = v2 { todo!() };
| ++ +++++++++++
error[E0005]: refutable pattern in local binding
--> $DIR/bad-pattern.rs:17:13
|
LL | let [0] = v4;
| ^^^ patterns `&[]` and `&[_, _, ..]` not covered
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
= note: the matched value is of type `&[u32]`
help: you might want to use `if let` to ignore the variants that aren't matched
|
LL | if let [0] = v4 { todo!() };
| ++ +++++++++++
error[E0005]: refutable pattern in local binding
--> $DIR/bad-pattern.rs:18:13
|
LL | let Refutable::A = v3;
| ^^^^^^^^^^^^ pattern `Refutable::B` not covered
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
note: `Refutable` defined here
--> $DIR/bad-pattern.rs:4:6
|
LL | enum Refutable {
| ^^^^^^^^^
LL | A,
LL | B,
| - not covered
= note: the matched value is of type `Refutable`
help: you might want to use `if let` to ignore the variant that isn't matched
|
LL | if let Refutable::A = v3 { todo!() };
| ++ +++++++++++
error[E0005]: refutable pattern in local binding
--> $DIR/bad-pattern.rs:19:13
|
LL | let PAT = v1;
| ^^^
| |
| pattern `1_u32..=u32::MAX` not covered
| missing patterns are not covered because `PAT` is interpreted as a constant pattern, not a new variable
| help: introduce a variable instead: `PAT_var`
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
= note: the matched value is of type `u32`
error: aborting due to 7 previous errors
For more information about this error, try `rustc --explain E0005`.
|
