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Missing period
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@ -189,7 +189,7 @@ relate to each other in the context of the `longest` function.
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To use lifetime annotations in function signatures, we need to declare the
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generic *lifetime* parameters inside angle brackets between the function name
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and the parameter list, just as we did with generic *type* parameters
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and the parameter list, just as we did with generic *type* parameters.
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We want the signature to express the following constraint: the returned
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reference will be valid as long as both the parameters are valid. This is the
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