Code cleanup#100

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zonyitoo merged 1 commit intomongodb:masterfrom

H2CO3:grand-cleanup

Jul 27, 2018

Commits on Jul 27, 2018

Code cleanup: remove several unnecessary allocations (`clone()`/`to_owned()`/`to_string()`) and ref-deref noops for `Copy` types; `#[derive]` some useful std traits for certain types for better int…
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