A few remarks: * Syntactic sugar for nested loops is welcome! * I would have preferred a comparison with https://github.com/Shinmera/for/ https://github.com/S

A few remarks: * Syntactic sugar for nested loops is welcome! * I would have preferred a comparison with https://github.com/Shinmera/for/ https://github.com/Shinmera/for/, as it's nearer in concept than loop/iterate. * Eschewing collection is a mistake in my opinion. Yes, you can do your own with (let ((ret)) (for ... (push it ret)) (nreverse ret)), but it'll be verbose. As other said, it's a very Scheme-y vision of looping, which has simplicity/purity/explicitness advantages but lacks in pragmatism. Personally, I firmly stay in the iterate team, even with its issues.