Easy recursion in Rust, without stack overflows.

Orson Peters

Last update: Jul 5, 2024

Related tags

Command-line recursive

Overview

Recursive

With recursive you can easily make (indirectly) recursive functions without worrying about stack overflows by marking them as #[recursive]:

use recursive::recursive;

#[recursive]
fn sum(nums: &[u64]) -> u64 {
    if let Some((head, tail)) = nums.split_first() {
        head + sum(tail)
    } else {
        0
    }
}

Functions marked with #[recursive] will automatically grow the stack size if it is too small when called. See the crate docs for details.

License

recursive is licensed under the MIT license.

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Comments

Inference is broken for functions returning dyn Traits

By moving the function body in a closure the Rust compiler infers a concrete type instead of the dyn Trait. Perhaps duplicating the return type on the closure helps.

opened by orlp 0

Owner

Orson Peters

GitHub

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