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more clippy cleanups#69713

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bors merged 5 commits intorust-lang:masterrust-lang/rust:masterfrom matthiaskrgr:more_cleanupmatthiaskrgr/rust:more_cleanupCopy head branch name to clipboardMar 6, 2020

+32-38

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Commits on Mar 4, 2020

• Don't use .ok() before unwrapping via .expect() on a Result.

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• Use .map() to modify data inside Options instead of using .and_then(|x| Some(y)) (clippy::option_and_then_some)

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• Use .as_deref() instead of .as_ref().map(Deref::deref) (clippy::option_as_ref_deref)

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• Don't use "if let" bindings to only check a value and not actually bind anything.

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  d8d2004

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• Use single-char patter on {ends,starts}_with and remove clone on copy type.

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