I recently started checking out Rust and was quickly disappointed that it's near impossible to chain anything unless their signatures match perfectly. Subsequen

I recently started checking out Rust and was quickly disappointed that it's near impossible to chain anything unless their signatures match perfectly. Subsequently, I found the `mdo` crate[0] to be rather useful, although I'm not sure how idiomatic it is. It's essentially a macro that implements Haskell's do-notation. Here's a snippet from the README: let l = mdo! { z =<< 1i32..11; x =<< 1..z; y =<< x..z; when x * x + y * y == z * z; ret ret((x, y, z)) }.collect::<Vec<_>>(); [0]: https://crates.io/crates/mdo https://crates.io/crates/mdo