src/librustc_error_codes/error_codes/E0027.md

   1 A pattern for a struct fails to specify a sub-pattern for every one of the
   2 struct's fields.
   3
   4 Erroneous code example:
   5
   6 ```compile_fail,E0027
   7 struct Dog {
   8     name: String,
   9     age: u32,
  10 }
  11
  12 let d = Dog { name: "Rusty".to_string(), age: 8 };
  13
  14 // This is incorrect.
  15 match d {
  16     Dog { age: x } => {}
  17 }
  18 ```
  19
  20 To fix this error, ensure that each field from the struct's definition is
  21 mentioned in the pattern, or use `..` to ignore unwanted fields. Example:
  22
  23 ```
  24 struct Dog {
  25     name: String,
  26     age: u32,
  27 }
  28
  29 let d = Dog { name: "Rusty".to_string(), age: 8 };
  30
  31 match d {
  32     Dog { name: ref n, age: x } => {}
  33 }
  34
  35 // This is also correct (ignore unused fields).
  36 match d {
  37     Dog { age: x, .. } => {}
  38 }
  39 ```