this post was submitted on 26 Jun 2024
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Rust Container Cheat Sheet (programming.dev)
submitted 1 year ago by snaggen@programming.dev to c/rust@programming.dev
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Found this on Mastodon https://fosstodon.org/@dpom/112681955888465502 , and it is a very nice overview of the containers and their layout.

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[–] jameseb@lemm.ee 6 points 1 year ago* (last edited 1 year ago)
  1. Why does it say where T: Sized for references &T? A reference can definitely point to an unsized type, e.g. &str.

I think the point being made is that the layout shown only applies for Sized T. Layouts for &[T] and &dyn Trait are shown elsewhere on the sheet. &str is noted under &[T].

Edit: although, similar considerations would apply to other pointer types, but that isn't noted on the sheet except for Box<[T]>