diff options
| -rw-r--r-- | src/librustc_error_codes/error_codes/E0026.md | 37 |
1 files changed, 10 insertions, 27 deletions
diff --git a/src/librustc_error_codes/error_codes/E0026.md b/src/librustc_error_codes/error_codes/E0026.md index 9327b31ac4b..72c575aabb6 100644 --- a/src/librustc_error_codes/error_codes/E0026.md +++ b/src/librustc_error_codes/error_codes/E0026.md @@ -1,51 +1,34 @@ -This error indicates that a struct pattern attempted to extract a non-existent -field from a struct. Struct fields are identified by the name used before the -colon `:` so struct patterns should resemble the declaration of the struct type -being matched. +A struct pattern attempted to extract a non-existent field from a struct. -``` -// Correct matching. -struct Thing { - x: u32, - y: u32 -} - -let thing = Thing { x: 1, y: 2 }; - -match thing { - Thing { x: xfield, y: yfield } => {} -} -``` - -If you are using shorthand field patterns but want to refer to the struct field -by a different name, you should rename it explicitly. - -Change this: +Erroneous code example: ```compile_fail,E0026 struct Thing { x: u32, - y: u32 + y: u32, } let thing = Thing { x: 0, y: 0 }; match thing { - Thing { x, z } => {} + Thing { x, z } => {} // error: `Thing::z` field doesn't exist } ``` -To this: +If you are using shorthand field patterns but want to refer to the struct field +by a different name, you should rename it explicitly. Struct fields are +identified by the name used before the colon `:` so struct patterns should +resemble the declaration of the struct type being matched. ``` struct Thing { x: u32, - y: u32 + y: u32, } let thing = Thing { x: 0, y: 0 }; match thing { - Thing { x, y: z } => {} + Thing { x, y: z } => {} // we renamed `y` to `z` } ``` |