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error[E0282]: type annotations needed for `[_; 3]`
--> $DIR/slice-patterns-irrefutable.rs:43:9
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LL | let b;
| ^
LL |
LL | [a, b] = Default::default();
| - type must be known at this point
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help: consider giving `b` an explicit type, where the placeholders `_` are specified
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LL | let b: [_; 3];
| ++++++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0282`.
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