Wagon

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Wagon is a stack-based language created by Chris Pressey in 2019. It's advertised as a "second-order concatenative language". It uses a stack of unbounded size integers and a small set of built-in instructions. Wagon programs can have nested loops, but only one loop may be nested inside any loop.

Computational class

Despite the restriction to strictly-singly-nested loops, Wagon has been shown to be Turing-complete, since any Tag system can be compiled to a Wagon program (see link below.)

External links