Oops I wrote it again #7
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I started working on #6 and ran into a few other limitations of Rust's macro system. This kind of escalated, and I ended up re-implementing it as proc macro in the great lambda crate. But I think the macro fits better in here, so I copied the code over (:
The new style is undoubtedly different, but it's nice, simple and I really like it. A lot of the limitations like having to use braces and brackets no longer apply. See the
cargo docfor more details.