39 lines
1.8 KiB
Plaintext
39 lines
1.8 KiB
Plaintext
error[E0596]: cannot borrow data in an index of `HashMap<&str, String>` as mutable
|
|
--> $DIR/index-mut-help.rs:10:5
|
|
|
|
|
LL | map["peter"].clear();
|
|
| ^^^^^^^^^^^^ cannot borrow as mutable
|
|
|
|
|
= help: trait `IndexMut` is required to modify indexed content, but it is not implemented for `HashMap<&str, String>`
|
|
= help: to modify a `HashMap<&str, String>`, use `.get_mut()`, `.insert()` or the entry API
|
|
|
|
error[E0594]: cannot assign to data in an index of `HashMap<&str, String>`
|
|
--> $DIR/index-mut-help.rs:11:5
|
|
|
|
|
LL | map["peter"] = "0".to_string();
|
|
| ^^^^^^^^^^^^ cannot assign
|
|
|
|
|
= help: trait `IndexMut` is required to modify indexed content, but it is not implemented for `HashMap<&str, String>`
|
|
help: to modify a `HashMap<&str, String>`, use `.get_mut()`, `.insert()` or the entry API
|
|
|
|
|
LL | map.insert("peter", "0".to_string());
|
|
| ~~~~~~~~ ~ +
|
|
LL | map.get_mut("peter").map(|val| { *val = "0".to_string(); });
|
|
| ~~~~~~~~~ ~~~~~~~~~~~~~~~~~~ ++++
|
|
LL | let val = map.entry("peter").or_insert("0".to_string());
|
|
| +++++++++ ~~~~~~~ ~~~~~~~~~~~~ +
|
|
|
|
error[E0596]: cannot borrow data in an index of `HashMap<&str, String>` as mutable
|
|
--> $DIR/index-mut-help.rs:12:13
|
|
|
|
|
LL | let _ = &mut map["peter"];
|
|
| ^^^^^^^^^^^^^^^^^ cannot borrow as mutable
|
|
|
|
|
= help: trait `IndexMut` is required to modify indexed content, but it is not implemented for `HashMap<&str, String>`
|
|
= help: to modify a `HashMap<&str, String>`, use `.get_mut()`, `.insert()` or the entry API
|
|
|
|
error: aborting due to 3 previous errors
|
|
|
|
Some errors have detailed explanations: E0594, E0596.
|
|
For more information about an error, try `rustc --explain E0594`.
|