Document CoerceUnsized and DispatchFromDyn types as special

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
42/100
Issue type
Documentation
Clarity
Mostly clear
Activity status
Stale
Tech stack
rust
Domain
documentation

Research direction

Start with the Reference's "special types" page and the "type coercions" section, which already mention CoerceUnsized and Unsize. Update the documentation to address CoerceUnsized and DispatchFromDyn alongside the other magic traits, and make the related mentions consistent across those sections.

Written by the indexing model from the issue text.

Description

The "special types" page lists Rc, Arc and a few others as special because they can be method receivers. This is achieved by them implementing a magic trait, Receiver. Given that, shouldn't we do the same for other magic traits? The ones I can think of right now are CoerceUnsized and DispatchFromDyn.

Relatedly, CoerceUnsized and Unsize are actually mentioned in the docs ("type coercions"), but Receiver and DispatchFromDyn are not.

Dominant language
Rust
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Forks
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Merged PRs (30d)
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