https://github.com/bamarsha/abacus

A simple math expression parser and calculator.
https://github.com/bamarsha/abacus

calculator haskell parsec reflex-frp

Last synced: 11 months ago
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A simple math expression parser and calculator.

• Host: GitHub
• URL: https://github.com/bamarsha/abacus
• Owner: bamarsha
• Created: 2018-12-25T03:22:13.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2024-03-25T19:40:20.000Z (almost 2 years ago)
• Last Synced: 2025-03-10T15:09:23.345Z (12 months ago)
• Topics: calculator, haskell, parsec, reflex-frp
• Language: Haskell
• Homepage: https://www.sarahmarshall.name/abacus/
• Size: 4.36 MB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 5
• Metadata Files:
  • Readme: README.md

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README

          
# Abacus

![A screenshot of Abacus](screenshot.png)

Abacus is a calculator with a small math language that supports user-defined

variables and functions.

[**Try it out!**](https://samarsha.github.io/abacus/)

## Building Abacus

Abacus uses Haskell with [Reflex](https://github.com/reflex-frp/reflex).

I recommend building Abacus with [GHCJS](https://github.com/ghcjs/ghcjs).

Here's how, assuming you have GHCJS installed:

```

npm install

cabal v2-build --ghcjs

```

This should create the folder `dist-newstyle/build/*/*/*/build/abacus/abacus.jsexe`, where the `*`'s depend on your system.

Open `index.html` in that folder in a web browser.

If you use Visual Studio Code, this repository uses a dev container that comes with GHCJS.