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What are some mind blowing Rust tricks? (programming.dev)

submitted 1 day ago* (last edited 1 day ago) by [email protected] to c/[email protected]

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If we were to create a Rust version of this page for Haskell, what cool programming techniques would you add to it?

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[–] [email protected] 2 points 22 hours ago (1 children)

Yea it's like when we writeSome(2). It's not a function call but a variant of the Option enum.

[–] [email protected] 3 points 21 hours ago (1 children)

Enum constructors are functions, this typechecks:

fn foo<T>() {
    let f: fn(T) -> Option<T> = Some;
}

I was a bit apprehensive because rust has like a gazillion different function types but here it seems to work like just any other language with a HM type system.

[–] [email protected] 2 points 20 hours ago

Woah. That's quite interesting. I didn't know that.