this post was submitted on 10 Feb 2026
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Programmer Humor

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[–] Flipper@feddit.org 40 points 2 days ago (3 children)

Deref is for smart pointers and not for inheritance.

[–] Phoenix3875@lemmy.world 20 points 2 days ago

Let me introduce you to this horror story: Deref Polymorphism https://rust-unofficial.github.io/patterns/anti_patterns/deref.html

[–] calcopiritus@lemmy.world 4 points 2 days ago

The windows crate is full of Deref. Because the windows API is full of inheritance.

It may not be what the trait was thought of for, but I'm glad we have it to interface with APIs that have actual inheritance.

[–] jenesaisquoi@feddit.org 2 points 2 days ago

Also sometimes newtypes