mirror of https://github.com/rust-lang/rust
18 lines
645 B
Plaintext
18 lines
645 B
Plaintext
error[E0283]: type annotations needed
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--> $DIR/question-mark-type-infer.rs:10:21
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LL | l.iter().map(f).collect()?
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| ^^^^^^^ cannot infer type of the type parameter `B` declared on the method `collect`
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= note: cannot satisfy `_: FromIterator<Result<i32, ()>>`
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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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help: consider specifying the generic argument
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LL | l.iter().map(f).collect::<Vec<_>>()?
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| ++++++++++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0283`.
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