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