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error[E0308]: mismatched types
--> $DIR/chain-method-call-mutation-in-place.rs:2:23
|
LL | let x: Vec<i32> = vec![1, 2, 3].into_iter().collect::<Vec<i32>>().sort_by_key(|i| i);
| -------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Vec<i32>`, found `()`
| |
| expected due to this
|
= note: expected struct `Vec<i32>`
found unit type `()`
note: method `sort_by_key` modifies its receiver in-place, it is not meant to be used in method chains.
--> $DIR/chain-method-call-mutation-in-place.rs:2:71
|
LL | let x: Vec<i32> = vec![1, 2, 3].into_iter().collect::<Vec<i32>>().sort_by_key(|i| i);
| ^^^^^^^^^^^ this call modifies its receiver in-place
error[E0599]: no method named `sort` found for unit type `()` in the current scope
--> $DIR/chain-method-call-mutation-in-place.rs:3:72
|
LL | vec![1, 2, 3].into_iter().collect::<Vec<i32>>().sort_by_key(|i| i).sort();
| ^^^^ method not found in `()`
|
note: method `sort_by_key` modifies its receiver in-place, it is not meant to be used in method chains.
--> $DIR/chain-method-call-mutation-in-place.rs:3:53
|
LL | vec![1, 2, 3].into_iter().collect::<Vec<i32>>().sort_by_key(|i| i).sort();
| ^^^^^^^^^^^ this call modifies its receiver in-place
error[E0308]: mismatched types
--> $DIR/chain-method-call-mutation-in-place.rs:7:5
|
LL | fn foo(mut s: String) -> String {
| ------ expected `String` because of return type
LL | s.push_str("asdf")
| ^^^^^^^^^^^^^^^^^^ expected `String`, found `()`
|
note: method `push_str` modifies its receiver in-place
--> $DIR/chain-method-call-mutation-in-place.rs:7:7
|
LL | s.push_str("asdf")
| - ^^^^^^^^ this call modifies `s` in-place
| |
| you probably want to use this value after calling the method...
= note: ...instead of the `()` output of method `push_str`
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0308, E0599.
For more information about an error, try `rustc --explain E0308`.
|
