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---
date: '2017-08-17T00:00:00Z'
draft: true
tags:
- tapl
- rust
title: Untyped Arithmetic Expressions
---
Chapters 3 and 4 of the book develop the required tools for a small and trivial language of numbers and booleans.  You can find the [OCaml implementation](https://www.cis.upenn.edu/~bcpierce/tapl/checkers/arith.tar.gz) of this language on book's website.  And you can find my Rust implementation at [arith.rs](https://github.com/amir/tapl.rs/blob/master/src/tapl/arith.rs).