| A binary operation was attempted on a type which doesn't support it. |
| |
| Erroneous code example: |
| |
| ```compile_fail,E0369 |
| let x = 12f32; // error: binary operation `<<` cannot be applied to |
| // type `f32` |
| |
| x << 2; |
| ``` |
| |
| To fix this error, please check that this type implements this binary |
| operation. Example: |
| |
| ``` |
| let x = 12u32; // the `u32` type does implement it: |
| // https://doc.rust-lang.org/stable/std/ops/trait.Shl.html |
| |
| x << 2; // ok! |
| ``` |
| |
| It is also possible to overload most operators for your own type by |
| implementing traits from `std::ops`. |
| |
| String concatenation appends the string on the right to the string on the |
| left and may require reallocation. This requires ownership of the string |
| on the left. If something should be added to a string literal, move the |
| literal to the heap by allocating it with `to_owned()` like in |
| `"Your text".to_owned()`. |
