this post was submitted on 11 Sep 2025
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The Hidden Rules Behind Rust Functions & Closures (blog.cuongle.dev)
submitted 1 month ago by turbohz@programming.dev to c/rust@programming.dev
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[–] calcopiritus@lemmy.world 9 points 1 month ago* (last edited 1 month ago)

Well, the closure has a type. Just you cannot declare it. That's why you do "impl Fn" instead. Because you know that whatever type the close is, it implements the "Fn" trait.