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crate: arrayvec

https://lib.rs/crates/arrayvec/

Add the last reviewed version to Cargo.toml / [dependencies]:

arrayvec = "0.7.2"

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thoroughness, understanding
arrayvec 0.4.9
negative
2019-07-28
high, medium

Prefer 0.4.11 which at least starts using MaybeUninit instead of uninitialized!(), which is fundamentally unsound.
Uses a disturbing amount of unsafe, but aside from uninitialized, it all at least appears to be correct after a careful reading.
Unlike smallvec, this doesn't fall back on the heap.
Better than whatever you'll write rolling your own, at least.

0.4.7 -> 0.4.8: IntoIter implemented Clone, unconcerning
0.4.8 -> 0.4.9: ArrayString initialized to 0, ArrayVec uses nightly MaybeUninit. Unfortunately stable still uses uninitialized!() so this is still negative.

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