this post was submitted on 10 Feb 2026
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Programmer Humor

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[–] Flipper@feddit.org 32 points 1 month ago (3 children)

Deref is for smart pointers and not for inheritance.

[–] Phoenix3875@lemmy.world 19 points 1 month 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 1 month 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 1 month ago

Also sometimes newtypes