We recommend that if you've never used Rust before, you should check out the Getting started guide in addition to the Rust book. There are also many other great tools available at the Rust learning page. You should also check out the Rust website for up-to-date information.


The TI-Nspire has many options for writing programs. The calculator officially supports Lua, and Ndless programs are typically written in C or C++. This project aims to add Rust to that list of supported languages.

What is Ndless?

Ndless is a popular program written for the TI-Nspire, which allows running arbitrary code, bypassing TI's restrictions. It has a complete toolchain for compiling, linking, and packaging TI-Nspire programs.

What is Rust?

Rust is a modern language that's main focus is safety. For example, if you never type the word unsafe in your code, your program will never segfault. It has no runtime or overhead (such as in Python, Go, Java, JS, or C#)—just straight machine code. Its zero-cost abstractions allow you to feel like you're writing in a high level language, but compiles down to exactly what you would write in C or assembly. Rust was the most loved language in the 2016, 2017, 2018, and 2019 StackOverflow Developer Survey. In benchmarks, Rust is usually in between C and C++ in terms of speed, but while maintaining an easy-to-use syntax with extremely helpful error messages, that often provide the fix in the message. Rust uses RAII, meaning that no garbage collector is needed, but there is no need to manually allocate and free memory. Rust combines speed of procedural languages with the ease-of-use of functional languages in one, creating one powerful language.


As ndless does not feature a full OS, only #![no_std] features are available. These include the core, alloc, and ndless libraries. The Rust std library is not available. However, the ndless crate attempts to recreate as many of the features in std. This means that any crates used will need to support no_std. This may involve configuring special features in your Cargo.toml.