Spyke
SorteKanin
feddit.dk

Nice sheet, though I have a few critiques:

  1. Why does it say where T: Sized for references &T? A reference can definitely point to an unsized type, e.g. &str.
  2. The yellow boxes really mean "must be heap allocated" - all the other references (&T, &[T] and &dyn Trait) may either point to the stack or the heap.
10
jamesebreply
lemm.ee
  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]>

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Rust Container Cheat Sheet | Spyke