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by nindalf 2083 days ago
Why does hyper pull in hashbrown? Isn't it identical to std::collections::HashMap?
2 comments
steveklabnik 2083 days ago
I imagine that it's there because it is older than that happening. HashBrown's README says

> Since Rust 1.36, this is now the HashMap implementation for the Rust standard library. However you may still want to use this crate instead since it works in environments without std, such as embedded systems and kernels.

I don't know if that use case is important to Hyper or not.

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CUViper 2083 days ago
The dependency goes hyper -> h2 -> indexmap -> hashbrown, and indexmap is built on hashbrown::raw::RawTable.
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scottlamb 2083 days ago
Looks like the indexmap -> hashbrown dependency was added recently: https://github.com/bluss/indexmap/pull/131
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