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51 lines
2.1 KiB
Plaintext
51 lines
2.1 KiB
Plaintext
error[E0308]: mismatched types
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--> $DIR/semi-suggestion-when-stmt-and-expr-span-equal.rs:13:5
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LL | fn foo() -> String {
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| ------ expected `String` because of return type
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LL | let mut list = {
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| ____________________-
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LL | | println!();
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LL | | };
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| |_____- this block is missing a tail expression
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LL | list
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| ^^^^ expected `String`, found `()`
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error[E0277]: a value of type `String` cannot be built from an iterator over elements of type `()`
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--> $DIR/semi-suggestion-when-stmt-and-expr-span-equal.rs:23:20
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LL | .collect::<String>();
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| ------- ^^^^^^ value of type `String` cannot be built from `std::iter::Iterator<Item=()>`
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| |
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| required by a bound introduced by this call
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= help: the trait `FromIterator<()>` is not implemented for `String`
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= help: the following other types implement trait `FromIterator<A>`:
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`String` implements `FromIterator<&char>`
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`String` implements `FromIterator<&str>`
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`String` implements `FromIterator<Box<str, A>>`
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`String` implements `FromIterator<Cow<'_, str>>`
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`String` implements `FromIterator<String>`
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`String` implements `FromIterator<char>`
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note: the method call chain might not have had the expected associated types
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--> $DIR/semi-suggestion-when-stmt-and-expr-span-equal.rs:20:10
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LL | String::new()
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| ------------- this expression has type `String`
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LL | .chars()
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| ------- `Iterator::Item` is `char` here
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LL | .filter(|x| !x.is_whitespace())
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| ------------------------------ `Iterator::Item` remains `char` here
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LL | .map(|x| {
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| __________^
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LL | | println!("Child spawned with the size: {}", x);
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LL | | })
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| |__________^ `Iterator::Item` changed to `()` here
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note: required by a bound in `collect`
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--> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0277, E0308.
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For more information about an error, try `rustc --explain E0277`.
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